Yes.
The owners send me regular emails and I phone them to check up on them. All part of being a responsible breeder.
The Raggie kittens I sold in my last litter have flourished and look stunning. They are very happy in their new homes and have been neutered/spayed as per my conditions of sale and are vaccinated and well cared for. It was really hard to let them go so I am happy. As I had over 50 phone calls for 3 kittens, I was lucky in that I could chose who I sold them to. It wasn't a case of first come first served. You wouldn't believe some of the emails/calls I got. One was from a lady who had just given up 5 cats a month previously for no good reason and now wanted a ragdoll kitten.......
I wont be breeding from the litter mates I kept. they are all spayed/neutered now. I'm not breeding at the moment as there are too many pedigree cats in rescues right now.