As an update, I disputed the charge through Discover. We’ll see what that means.
I’ve heard that it may cause me to lose my PayPal or eBay account, but I don’t know why they would do that over $3.50, given the amount of money that I have spent and received on PayPal, which is a lot. I’d be disappointed if they took that course of action. We shall see what happens. I’ll blog about it, of course. :)