Xbox for the OG classic console lets you use saturn, PS2 and dreamcast controllers on it.
http://www.ebay.co.uk/itm/-/263038899066? SOLD!
Ascii Fighting controller with superior layout (if you’re that way inclined) for beat em up guys.
More info here: http://segaretro.org/ASCII_Pad_FT
$70
Happy to ship to US although no idea on rates but we can work something out no doubt, thanks for looking