My wife wanted one, but we read that they had a lot of health problems, so we got a st. bernard....which had a lot of health problems. So i'm pretty sure its totally dependent on the dog.
I wouldnt get from a pet sotre, get from a reputable breeder, then tend to be healthier and actually cost a lot less. Petland was charging $4000 for bulldogs! a breeder you can get one for around 2k