It could be profitable in Milton Keynes where there are bunnies aplenty in the very large parks.
There are local butchers who will buy bunnies, but only if they have been supplied by legit bunny hunters for animal cruelty reasons. I'd need to find out about that though and I expect I'd need to go through a few hoops to become a legit bunny hunter. So probably a no-goer, unless I get my arse in gear (unlikely)
A few hundred quid doesn't seem too bad though, if it lasts even a few years, it'd pay for itself in time. I think it's better (more humane) than my current buying battery chickens from Tesco.
I doubt I'd really get into the sport though. Lack of time mostly, but maybe when I retire...