# How to check a product’s price history before buying One price from the day of a promotion is not enough to assess a deal; you need to compare it with earlier prices and the typical value of the same model. > Updated: 2026-10-28 · Damian Jabłoński, Łowca (lowca-okazji.com) · https://lowca-okazji.com/en/poradnik/product-price-history-how-to-check-a-real-deal ## Why the current price does not show the full history The price shown on Black Friday is not enough to assess a deal. You need to compare it with earlier prices, the price from the last 30 days, and the typical market value of exactly the same model. A store may raise the price before a promotion and then lower it on the day of the sale. Such an offer may look attractive even though the earlier price was similar or lower. The increase may also happen more than 30 days before the promotion. The indication of the lowest price from the last 30 days shows only the required reference point for that period. It does not show older price increases, earlier reductions, or how long the product cost a given amount. A product’s price history therefore requires a broader comparison. It is useful to separate two issues. One concerns the price in a specific store. The other concerns the typical value of the same product across the entire market, including used offers. ## Three ways to check price history ### 1. Recording prices yourself For several weeks, record the product’s price in the selected store. A note with the date, a screenshot, or a spreadsheet with the product address is enough. Also record information about delivery, mandatory accessories, and promotion terms. Always compare the same variant. A laptop with more memory, headphones with a different set of accessories, or a phone with a different capacity do not form one price history. A recorded price without the model name and version may later be misleading. This method shows actual changes in the store being monitored. It does not require an account on any service, but it requires regular checking and making sure that you compare an identical product. ### 2. Checking the price from the last 30 days Before buying, read the price from the last 30 days shown next to the promotion. Compare it with the current price and your own earlier notes. If you do not have notes, the 30-day information is a useful starting point, but not a complete price history. Check whether the 30-day price concerns the same variant, the same store, and the same purchase costs. The price including delivery may be higher than the price shown on the product page. A discount code may have additional conditions, such as requiring a specific payment method. ### 3. Comparing with the used-offer market Check how much the same product costs in used offers. This comparison helps assess the typical value of an item, especially when a store shows a large reduction without a longer history. The used market is not a substitute for the price of a new product. It is an additional reference point. The difference may result from condition, age, warranty, completeness of the set, or transaction risk. An offer that is suspiciously cheap should be analyzed separately, with attention to the description and seller. Helpful guidance can be found in the article [Suspiciously cheap listing — is it a scam?](/poradnik/ogloszenie-podejrzanie-tanie-czy-to-oszustwo). ## How to compare the price of a specific model A product name often covers several different versions. Price history only makes sense when you compare the same model in a similar condition and with similar equipment. Check in particular: - **Exact model and version number.** The same product may have different memory, processor, battery capacity, color, or generation designation. - **Product condition.** New, used, refurbished, and display models are different categories. With used equipment, signs of wear and working condition also matter. - **Complete equipment set.** The lack of a charger, box, remote control, mount, or branded accessories may justify a lower price. - **Warranty and proof of purchase.** The price of a product with a manufacturer’s warranty is not directly comparable with the price of a product without a warranty. - **Product version.** A version intended for another market, a model with different distribution, or a modified device may have different service conditions. - **Purchase costs.** Add delivery, service fees, collection costs, and any accessories needed to use the product. Do not compare only the name in the listing. Check the photos, model number, condition description, and contents of the set. When buying a used laptop, it is also worth checking the battery, screen, keyboard, ports, and whether the device can be inspected before payment. More practical guidance is available in the article [Is it worth buying a used laptop?](/poradnik/czy-warto-kupic-uzywany-laptop). ## Example: the price history of a laptop or headphones Suppose you are assessing a promotion for a specific laptop or pair of headphones. Do not start with the percentage reduction alone. Start by establishing the full model name and version. First, record earlier prices of the same product in the selected store. For each price, note the date, variant, delivery cost, and promotion terms. On Black Friday, check the price from the last 30 days and compare it with your own records. Next, search for the identical model in used offers. Reject listings for a different version, an incomplete set, or a clearly worse condition. Compare the remaining offers in terms of warranty, proof of purchase, age, and delivery cost. Finally, assess the differences. If the promotional price is lower than the earlier prices of the same product and remains attractive compared with comparable used offers, you have stronger grounds to consider it a deal. If the difference results only from an earlier price increase, missing equipment, or a shorter warranty, the promotion label alone is not enough. ## How Łowca helps with this Łowca does not create a complete store price history. It does not show all earlier price changes on a product page and does not replace your own notes about a specific store. Łowca helps with a different comparison. It searches OLX, Otomoto, Otomoto (parts), Allegro Lokalnie, Vinted, Otodom, and Sprzedajemy at the same time, then calculates the typical market price for a specific item. This makes it possible to check how an offer compares with similar listings instead of assessing it only based on the word “promotion”. The service combines duplicates, so the same listing posted on several monitored services is reported once. It also marks higher-risk offers and moves them to a separate “check carefully” section. This is a signal for additional verification, not a guarantee that the remaining listings are safe. You can describe the product you need before starting the search. Łowca may advise on a specific model based on the description of your needs and then search for matching offers. Setting up an observation and scanning the market costs 0 points. A delivered alert costs 20 points, regardless of the number of monitored services; an alert concerning a car with listings from abroad costs 30 points. Details are available on the [price list](/cennik). ## When Łowca is not needed Łowca is not necessary when a product has an easy-to-track price in one store and the purchase concerns an exactly specified model. In that situation, your own notes and a comparison of the current price with the price from the last 30 days may be enough. The service does not replace checking the specifications, condition, warranty, or seller. The typical market price does not confirm a product’s authenticity and does not guarantee a successful transaction. With a used offer, you still need to verify the description, photos, proof of purchase, and collection method. Łowca is also less useful when the decision depends on a one-time discount code, loyalty program, or individual terms in a specific store. Such information should not be replaced with a comparison of listings. ## Checklist before buying on Black Friday - **Identical model:** check the model number, version, capacity, color, and complete equipment set. - **Earlier prices:** compare the current amount with your own records from previous weeks. - **Price from the last 30 days:** read the lowest price from the last 30 days and check exactly what it concerns. - **Typical market price:** compare the offer with similar listings, taking condition, warranty, and completeness into account. - **Offer terms and risk:** check delivery, returns, warranty, seller, and signs of increased risk. ## Frequently asked questions ### How do you check a product’s price history? Record the prices of the same model in the selected store, then compare them with the price from the last 30 days and typical prices of comparable used offers. Also check the product variant, purchase costs, and promotion terms. ### Can a store raise the price before Black Friday? A store can change the price before Black Friday, so the reduction on the day of the promotion alone does not determine whether the offer is attractive. It is worth comparing it with earlier records and the price from the last 30 days. ### How far in advance should you start tracking a product’s price? It is best to start tracking several weeks before the planned purchase so that you can record earlier prices and notice their changes. For a purchase planned further in advance, it is worth keeping notes for an even longer period. ### Is the price of a used product a good reference point? The price of a used product is an additional reference point for market value, but it does not replace the price of a new product. You need to consider condition, age, warranty, completeness of the set, and transaction risk. ### Is the lowest price from the last 30 days enough to assess a promotion? The lowest price from the last 30 days is not enough for a full assessment of a promotion because it does not show older price changes. It is worth comparing it with your own notes and the typical market price of the same model. ### Does Łowca show price history in stores? Łowca does not create a complete price history in stores. It calculates the typical market price of a specific item based on matching offers from OLX, Otomoto, Otomoto (parts), Allegro Lokalnie, Vinted, Otodom, and Sprzedajemy, and marks higher-risk offers. --- Łowca monitors publicly available listings. We are not affiliated with any of the monitored marketplaces or with Ceneo.