Depends who you know! My dad used to sell them to almost everyone at his office for £5 a go in the early 90's. He gave up as it was turning into a job!
We also used to have people come to our field and to shoot/ferret the wild ones. So I am sure some of those were being sold.
I think places that already serve other game and not rabbit would be worth asking to see if there is a potential
local market for them. Maybe game is more popular down south?!