I do, but I read some while ago that there was some "deal" with Amazon that prevented them from tracking real sale prices, and it also can't account for voucher

I do, but I read some while ago that there was some "deal" with Amazon that prevented them from tracking real sale prices, and it also can't account for voucher codes that apply at checkout. I'm not sure if the former still stands, but on the whole, I've found CCC doesn't always have the actual best price I've recorded.