I am considering purchasing a used camera from shop in Wales--that would be Wales to the U.S.

I really do not know what to expect in the way of taxes, shipping arrangements, customs fees, etc. Does anybody have any experience?

Royal Mail vs Parcel Service like UPS? How about their fees for maybe an inspection? VAT? U.S. Customs fees and where are they collected, how much, and cash/check/credit card, etc.

Help is appreciated. Thanks.