I'm just wondering why there needs to be a different prize for each one? Inevitably, people are going to prefer one over the other. And if you happen to use the payment option that will get you the one you prefer, then that's lucky. But if not, you're gonna have to buy it from someone else. Wouldn't it be better if both the prizes were the same? That way, it'll save us the trouble of having to buy the item from another cash shopper--in my instance, I'd have to find a stripe cash shopper. In addition, because I don't really like the item given as a reward for buying through PayPal, I will not be spending cash. I feel like the site as a whole would make more profit if they just made the item rewards identical and just increase the frequency of prize rotations. Just my thoughts.
Tons of people are willing to swap for the opposite bonus item, generally. I would spend just as much but I do one transaction with each payment method so I can get both bonuses (though if I didn't like one I just wouldn't do that? I'd still spend though)
Like I highly doubt the fact that a free bonus item (in addition to extra free CSC) is deterring anyone from buying :L