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.
Good info, I'm surprised that haven't figured out how to account for coupons. Seems very feasible, especially considering the army of people with extensions installed.
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...
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.