There's a problem with the suggestion box in your form that's not allowing me to submit the feedback privately.

The UX needs a lot of work and the cashback element that's dynamic made no sense without any additional guidance. Because you slashed out the $7.5 original price, "current price" implies just simply a sale price or current offer not that it will change as the quantity sold changes.

I think you have to find some way to connect the qty sold and cashback graph so that it's more clear as one goes up, the other goes down. Also, it doesn't make sense right now that the cashback is green when it's obviously past the halfway mark so shouldn't it be yellow since that implies that it's likely to go down soon?