Bengal cats aren't cheap
They also technically used to require a wild animal license in the UK, but realistically although they can be very spirited they're generally a long way from wild.
It's odd, though. Whilst Bengals are one of the better known pedigree cats, especially as they're spotted, and they're not cheap, neither are they ridiculously expensive. There are several breeds that are more expensive, including the contentious Savannah, and the Egyptian Mau, which isn't derived from wild cats at all (except in antiquity).