Lately, several companies that I have seen have a show more button which simply shows just one option. An example of this can be found here:
Would it not be simpler to show all three, and possibly result in more customers? If a user quickly scanned the page they'd think:
Ah, damn, paypal or credit card only... Maybe I can't donate
Whereas the hidden amazon logo in the example is able to be viewed quickly and easily.
TL;DR: Is it too much for a company to put three images shown rather than two? Does it really overwhelm the user when there is already an addition of a show more button.