The Capcom Store has cut prices on all the Monster Hunter games in the US. Right now you can pick up the following games for a healthy cut in price.
Monster Hunter™ Tri (Wii)
Monster Hunter Tri™ Classic Controller Pro Bundle (Wii)
Monster Hunter Freedom (PSP)
Monster Hunter Freedom 2 (PSP)
Monster Hunter Freedom Unite™ (PSP)
All pretty good deals if you are looking to fill in the back catalogue of games in the series, or missing one of the current US games. I am sad to not see the PS2 version of the game on the site.