I'm not sure I follow. The day before, it was over $40. It was dropped for prime day (I assume that's the end of the graph - 39.59) and then 20% taken off as a discount. The $31 sale price is lower than both used and new. What am I missing here.
Agreed. It doesn't look like anything fishy after deciphering the graph. The normal price is usually 39.59 and it was indeed 39.59 before the sale and it's now 20% off for 31.67.
A lot of these proce comparison sites are struggling with the sale, came camel camel has the same issues. It's because the sale isnt universal, only for prime subscribers.
Is it 20% off it's lowest price? No it isn't. But it's still lower than its lowest price.
Prices in Amazon fluctuate wildly. I have seen them be as much as 20% up or down in a matter of weeks.