So... how do I explain this? Basically, Amazon does list singles for various card games. But the singles are generally ridiculously expensive there, even for worthless cards, because Amazon's refund policy makes it very difficult for individual sellers to do business: if the person you sold it to says they didn't get it, well, amazon refunds them. Lou has also obviously been booted from Amazon before for issuing a lot of fraudulent refunds.
How he managed to spend about $12 on this is beyond me - but he doesn't have prime, right? So he was probably paying shipping on these. If they were 4 different sellers, that's 4 different shipping fees. When singles like this are sold on Amazon, you're never getting a bargain, but you're often getting ripped off. Also, "purely for curiosity" is complete cope. He's going to try to trade these into a shop, so keep an eye out for when he bitches about how LGSes aren't giving him his money's worth.