Buying on Swappa is safe and easy.
It's safe because we don't allow junk devices and we review and approve all listings before they can be bought. The verification process includes running ESN checks and requiring the seller to post verification photos to prove device ownership.
On Swappa we use PayPal for payments because they provide extensive buyer and seller protections. Many (most) sellers require buyers to have a PayPal confirmed shipping address to buy more maximum protections.