@Mincraftisa--Hello & welcome to the OfferUp Community Forums!! When you make a purchase or sell to someone you can't necessarily go by their profile.
Some people are experienced buying &/or selling & others are just starting out. I've sold items where the other person just opened their account with OfferUp, & they turned out to be awesome/return customers. If you're clear on your expectations & ensure that you & the buyer are on the same page, you'll do great!!