better off taking your payments in bitcoin than via paypal then.
paypal transaction can be reversed while bitcoin transactions can't. its too risky for sellers as many have been scammed with paypal payments. and the spread is often very wide so you are often not paying close to the real bitcoin price, usually the seller will add a 'convenience charge" or fee. people who take paypal for bitcoin are becoming rare.
By extensive verification, you mean providing ID, etc... ?
Have you tried this method? You don't need an ID for this one:
youtube.com/watch?v=iOp4HD5WWRk