@amyb
I have used Rakuten for years and I use easy pay, and never had a problem with getting the correct full amount at time of purchase even though the payment to QVC is spread over several months. I don't think EZ pay affects it at all, and all were purchased through a credit card, not with merchandise credits or through a check payment.
Same for Mr Rebates - I use whichever one is paying the highest percentage and am paid for the full amount regardless of EZ pay option.
......You look like I need a drink.....