Well, APBTs don't come in merle, so that's definitely a litter of mutts. You also have no way of knowing if the pups have genetic health issues. I doubt the parents are health tested.
If I were you, I'd forget about this and go find a real breeder.
"When we speak of bulldogs, the words that fit, Are those like courage, stamina and grit."-Floyd Boudreaux
"How many times have we heard the phrase 'I felt so Good I could lick the world!' Well, the American Pit Bull Terrier feels like that all the time!" - Richard F. Stratton