I think it depends how much you want to spend regarding programmes.
Eg: high end gym bikes have programs you can follow but cost mega ££££££££'s
Spin bikes don't tend to have programs as they are generally designed to be used in a class participation scenario, (follow the leader type thing).
I had an gym grade spin bike, and although cosmetically it wasn't great, (sweats a right bitch on paintwork), mechanically it was spot on.
Fact is there isn't a lot to go wrong with them that a DIY cyclist couldn't do anyway, even the BB in the one I had was a Shimano UN55
If you want a spin bike look for an older gym grade one. Mine was a Schwinn Johnny G Spinner Pro, these are regarded as the Rolls Royce of the spin world as Johnny G is noted as the Godfather of spinning, but to me the advantages of a commercial bike was the availability of spares.
Ballpark figure for one would be around the £200 mark IMO.
Would I buy another? No! I'd find a local class and go there instead as motivation on your own is a killer.