It all depends the way you sell.
If you are selling fake at high price you won't last long, but if you are selling at a decent price people will be happy with what you give them.
98% of buyers will know they are buying fake if resell price is 3 or 4 times what they are paying for.
You have a lot of apps to sell fake but again, transparency is the key in this business, and cheating peoples will put you down.
You can really easilly cheat PayPal and all payments processors, but you need to know about stealth accounts and how to get this money on your bank account.