But it is how it works. There are literally Millions of people buying stuff on Amazon on any one day.
Amazon and in fact no store just buys 7 widgets, and that's all they're ever going to own. They have a constant supply going in from suppliers, and a constant supply going out in the form of purchases.
Anything that doesn't - isn't selling and it's costing someone a huge amount of money to sit there, taking up space.
They are the same thing. I have 3 dozen eggs for sale. Buy em or don't. I might get more. I might not.
How do you expect them to know how many of an item physically exists in the world?
It's just a store like every other store. The seller sends their inventory to Amazon. Amazon stores it, and then ships it. The Seller doesn't tell Amazon how many total it has.
You don't see how many the seller has. You don't see how many the manufacturer has sitting in their warehouse. You don't see how many of this item were ever made. You don't see if the manufacturer can make more, or how many people they will potentially make in their entire existence.
You just see how many Amazon has in stock for sale right now.
Why would Amazon want to hinder the accuracy of the price tracking in that way? I would imagine Amazon wants their 30% cut (Depending on Category) and they want it as fast as possible. Their entire business is predicated on Churn, and Logistics.
In that way - I would imagine CamelCamelCamel increases conversion.
I wonder if the Coupons were shown to increase conversion for the 'Coupon' ladies that everyone sees in their local grocer. They only buy when they get a 'Good Deal'. They're willing to spend 9 hours to save $0.76 and they never "pay sticker price."
They want tracking sites to show higher prices than people actually pay as the "lowest price" so people think they are getting a deal. Scamazon does not want their prices tracked, it is disadvantagous for them for customers to be informed about their price adjustment trickery. Scamazon uses more dark patterns on their website than anyone.
Why would Amazon want to hinder the accuracy of the price tracking in that way?
Accurate price tracking leads to people saying "Oh well it was 50% less a year ago. I'll wait on a sale, not paying full price on that" and waiting on a sale, leading to less conversions. Amazon has pressured Camelcamelcamel into agreeing to not track specific low prices (i.e., Prime Day, if that actually had any good sales). I'm unsure if they track coupons or not, they were not clear about what the criteria for not tracking a price are.
Camelcamelcamel is unfortunately compromised by Amazon, it's probably mostly accurate but there are price points they do not accurately log at Amazon's request.