I definitely feel like goro would be the type to either exclusively shop online for them OR he'd "casually" walk past the sex shop for several days, loitering around and "scoping" the place out while trying to convince himself to go in. When he finally goes in, he tries to act as if he knows exactly what he's doing and smiles a little too politely at the cashier to the point that they instantly think he's a little strange. They obviously know it's his first time buying sex toys, but Goro walks out of that store thinking that he absolutely fooled everyone.