This would be a winning strategy for the seller, given that the value of the product is less than what they charge.
Nah it works out the exact same. Say you make $10 every time you sell a $100 product. That means you have a 50/50 chance of either gaining $110 or losing $90. 110*0.5 + (-90)*0.5 = $10.
Who said the odds were 50:50? >!Lol!<