I bought these from (http://my-wasabi.com/) a few days ago. The hard-case DS skin is $27, the soft PSP case is $22. International EMS shipping is $10, so in total, $59. They threw in a free cellphone strap.
I tried the 3DS case. The case itself isn’t thick enough so be careful applying it on and taking it off. Slipping the case on and off isn’t difficult though~
Don’t have a PSP yet to try the soft case but Jae has a spare and is kindly giving it to me.