Unfortunately camel^3 and others are easily gamed now by "on-page coupons" which keep the price the same or lower normally and can trick the price tracker into thinking it's a good deal when it's actually just the normal price.

This video has a good summary at the beginning: https://www.youtube.com/watch?v=-MsndlciGWA

Maybe the reason is that I live in the EU, but my Amazon app has the price history right in it. It’s both useful and entertaining.

I used to then switched to the amazon built in price tracker, then set alerts or auto buy below the lowest price it's been in the last year when I Really want something but don't need it immediately...

A sweater I liked that dropped to $19 just triggered the auto buy during this prime day sale...

Amazon is still a good deal in my country because they have competition that's kicking their ass.

Amazon UK and US now have a Price History button on products. It’s not quite as good as camel used to be, but it’s a convenient.

I'm totally the kind of person who loves sales, scans clearance racks regularly, and is always looking for deals but... Prime Day is the definition of "nothingburger". I mean, Kindle is on sale, Fire tablets are on sale. The things that are always on sale are on sale. It's an embarassment that the media covers Prime Day at all.