Amazon Price Drop Tracker: Prices, Deals & Best Sellers Rank

Track Amazon.com products by ASIN, product link or search, and schedule it. Every run gives you the price, the list or typical price and Amazon's discount, coupon, rating, number of ratings, "bought in past month", Best Sellers Rank, stock and seller. From the second run on, each product also says whether its price dropped since your last run, whether it is at the lowest price this tracker has seen, whether it is back in stock, and whether it is new to your search.

Other Amazon scrapers give you a snapshot. This one remembers.

See it run

What you can do with it

• Deal feeds: schedule a search every few hours with Only changes since the last run and get only the products that just dropped, ready for a deals site, Telegram channel or newsletter.
• Competitor prices: track your competitors' ASINs daily and see who cut prices, by how much, and who ran out of stock.
• Brand monitoring: check that resellers keep your products at the right price and spot new sellers in your category.
• Market research: Best Sellers Rank, ratings and "bought in past month" for every product in a search.

Input

{
  "products": ["B0D8LXRHQ8", "https://www.amazon.com/dp/B07Z8G97PY"],
  "searches": ["air fryer"],
  "pagesPerSearch": 1,
  "includeDetails": false,
  "onlyChanges": false,
  "priceDropThresholdPct": 5
}

• Products: ASINs or amazon.com product links. Their product page is always opened.
• Searches: keywords, or an amazon.com search link with your category and filters already set. Each result page has 16 to 48 products.
• Open each search result's product page: adds Best Sellers Rank, stock, seller, brand and categories to search results, at one extra request per product.
• Tracker memory name: the memory of prices lives in a key-value store with this name. Use one name per list you track and keep it the same on every run; the schedule does the rest.

Output

Field	From	Notes
price, currency	search and product page	the price Amazon shows to a US visitor
listPrice, listPriceLabel, amazonDiscountPct	search and product page	list (list price) or typical (Amazon's typical price)
coupon	search and product page	when Amazon shows one
rating, ratingsCount	search and product page
boughtPastMonth	search and product page	Amazon rounds it down ("30K+"), so it is a minimum
badges, isSponsored, searchPosition	search	Amazon's Choice, Best Seller, Overall Pick
otherOffersFrom, otherOffersCount	search	"More Buying Choices"
bestSellersRank, bestSellersCategory, bestSellersRanks	product page	main rank and sub-category ranks
availability, inStock, stockLeft	product page	stockLeft only when Amazon says "Only 3 left"
brand, soldBy, shipsFrom, isSoldByAmazon	product page
categories, hasVariants, image	product page
previousPrice, priceChange, priceChangePct	memory	from the second run of a tracker
lowestPriceSeen, lowestPriceSeenAt, isLowestPriceSeen	memory	lowest price this tracker has seen, not Amazon's all-time low
isNewSinceLastRun, firstSeenAt	memory	products new to your searches
isBackInStock	memory	out of stock last run, in stock now (needs product pages)

Rows have status: "ok". A product Amazon would not show after three tries comes back as status: "not_read" with the reason, and a removed product as not_found. Those rows are not charged.

What this Actor does not deliver

• Price history from before your first run. The memory starts with your first run; it does not reconstruct Amazon's past prices.
• Prices hidden by the brand. Some products show their price only in the cart; they come back with priceHidden: true and no price.
• Seller phone or email. Amazon does not publish them.
• Other Amazon stores (.co.uk, .de, .es...). Amazon.com only.
• Reviews text. Rating and count only.

Reliability, measured

Measured on 2026-10-17 from Apify without a proxy. Amazon answers some requests with a robot check, at random; the Actor asks again in two later passes and never tries to solve the check. A run of 8 searches with every product page opened delivered 256 products, all 256 with their product page read, in 11 minutes: 285 requests, 20 of them answered with a robot check and read on a later pass. A product whose page still cannot be read keeps the search data (price, rating, bought in past month) and is marked detailsRead: false.

Fill rates on product pages (245 pages, earlier run the same day): price 99 %, rating 99 %, bought in past month 90 %, brand 98 %, seller 100 %, Best Sellers Rank 93 %, categories 98 %, stock 72 %, list or typical price 66 % (only discounted products have one), coupon 8 %.

No proxy is needed. Product pages are limited to 500 per run; pages are read one at a time, about 2 seconds each.

Pricing

Pay per event:

• product: each product row delivered.
• product_page: added for each row whose product page was opened.
• Rows not read are free.

Tips

• Schedule the same input every few hours or daily. The first run builds the memory; drops, lows and new products start from the second run.
• With Only changes since the last run on, a run where nothing changed delivers nothing and costs only the start.
• One tracker memory can hold up to 50,000 products.