I really want Retribution, but it's just a little more than I'm willing to pay for it.
If it was $14.99, I'd do it. Even if they dropped the $4 shipping and it was just $19.99, I'd probably go for it. It might sound stupid, because it's only a couple of bucks, but I just can't do it.
But I did buy Ghost Keeper. I got it right away though, so I think it only came to $20 - $21 shipped if I recall.