Just figure out a price in euros that you want, then, and run it through http://www.xe.com/ucc/ to see what it's worth in USD. Paypal works with other currncies and can convert automatically, so you'll be getting the same amount of money
I'll trade you for a PAL GC with super smash bros, eternal darkness and zelda the wind waker (with ocarina of time)... oh yes and 2 controllers and 3 memcards