I am not privy to customs regs in any sense...but I have bought several Bryston products and never heard a word about it. And the purchase was even below the MSRP (new pieces).
To your original point, don't play in an arena that you are not 100% comfortable with. And by that I mean if you get screwed you are good with that.
Personally I wouldn't deal with the uncertainty unless see above.
Regards,
barts