I don't do much volume and I have been getting nett positive commissions on some options trades. I have not bothered to look at which exchanges as I am a swing trader and view commissions as a cost of doing business. There are bigger fish to fry.
I think even forl low volume retail traders, IB does offer tiny rebates for
adding liquidity. I rolled a CMG March 515P and 595C strangle up to
555P and 610C. Each leg had a rebate of between 9 and 16 cents.
At least there were no commissions.