Not all pet shops are bad, I occasionally give some of my unshowable babies to a friend who runs a pet shop. She only takes in rabbits from people she trusts and always asks questions before letting someone buy them. So the rabbits in her shop of mine are pedigree, well raised bunnies that maybe were a bit small, or a few too many black hairs on the coat etc.

I recommend a mix of Chudleys Rabbit Royale and Burgess Supa Rabbit Excel, it's an excellent diet (along with good quality hay and veg of course) and keeps my rabbits in good condition.