But I repeat: only CALL and FairPUT, and the underlying, are allowed in the market, the standard PUT is banned.
saying like that is like saying: "Hey, you can't sell your bicycle here because i want to sell my bicycle."
This is a marketplace and we can bid/offer whatever tf we want. At the end of the day, it's the market participants who decide what the market price is. BSM is a rulebook not a strategy. If the market wants they can price calls more expensive than puts.
If you are convinced that current puts are constantly overvalued then the easiest thing for you is to keep on selling them. Trying to ban something is way over and above you that it's actually rediculous.
The fact that you didn't understand the arb trade between regular and yours just makes it worse.
Edit: to be clear, if a fairput has the same price as a standard put, no one will buy the standard calls as they would get a better payout than the call with long stock and long the put. Similarly, just banning the standard puts on your exchange will do you no good, as people will just replicate the put with the call plus short stock, and arb that synthetic standard put against the fairput.
(Y)
