First hand info, not hearsay:
I bought a classical guitar off of ebay, it was already in US$, but located in London. I paid by PayPal. I think it was around $900. I bought it on a Saturday and I had it in my possession on a Monday or a Tuesday. It was incredibly fast. The seller took care of any paperwork. No extra money for anything, it was for personal use, not resale. It was fast and easy, the seller must have known the ins and outs. Oh, and the shipping was by Global Shipping, no complaints here. Somehow they have a relationship with the USPS.
Tom