Amazon and sellers seem to have caught onto price trackers like Camel^3 and turned it against us. Kind of like Dealerships and invoice pricing?
Deal of the Day (?), Lightning Deals and Coupons don't appear to be tracked and are frequently used to provide lower prices without affecting list price on trackers, making it feel like a better deal than it is.
I bought this around Prime Day 2018 for $12.99