Welcome to the community, @kayjay62!
I agree with what the others said. I stay away from PayPal as much as possible. Many dishonest sellers (scammers) will try to pay with PayPal because they know they can cancel the transaction at any time. It is safest to only use cash, or OfferUp Payments. I will give a heads up that the first couple transactions using OfferUp Payments may be a bit slow, until there is a relationship established between your OfferUp payments account and your bank account. Basically, the more you use this feature, the faster you'll get paid!
Good job trusting your gut on this one!