Terraria 4-Pack (30 USD)
Split the cost with 3 other friends (and by that I mean I paid for about half while the others paid $12.5, $2.5 and diddly-squat). I'll probably play about 20 minutes of it and then never touch it again except for the rare bit o' multiplayer. Just like when I got Minecraft.
Man I really need to stop wasting money on [parasitic bomb] I'll never play. But they apparently needed to purchase it on Steam through me, so I was just "sure whatever, I'll chip in". I guess it's just that hard to get a PayPal or American Visa from your parents. Come to think of it, does Steam even block Canadian credit cards?