We can't post breeders names here but someone local could private message you a recommendation if we know where you are.
Try searching for sphynx breeder <state name> on google, see which breeders sites come up. Search for reviews and really investigate them. Avoid sites like Craigslist unless it looks VERY legit upon closer scrutiny. The best breeders I know operate a wait list and don't need to advertise on Craigslist. Often the folks selling there aren't serious breeders. Not always the case of course but just my experience.
I saw you mention in another thread about the cat living in a dorm. Good breeders will ask this kind of thing in a questionnaire and may have a problem with this. They want to make sure kitty has enough space and attention. Worth being prepared.
If the price is too good to be true, the breeder is likely fake. Make sure they're okay with letting you visit the kitten before buying as is custom and showing any medical/vaccination papers, etc. Probably seeing if they'll let you visit is the easiest way, no legit breeder will refuse that.