Outpost prices fluctuate badly. If you see it and you think you should get it, jump on it, since the price might not be that low shortly in the future. Harvest Moon was down to $19.99 last week, then went back up to $24.99 a couple of days later, then $29.99 a day after that (normal price). Their pre-order stuff tends to go the same way.
One annoyance is that shipping charges from Outpost.com are pretty ugly when it's a single item, I end up making sure I can find something else to share the shipping charges with, usually a couple other games.