Polynomial trade charges 0 fees on standard orders. You'll get the exact same price trading through Polynomial trade as what you'd get trading through the perps v2 contracts directly.
Keeper deposit: Dynamic fee given to the keeper bots to execute the trade (from 0$ to 10$)
Fees: 2/6-10 bps based on the market skew.
We add our referral code to Synthetix perps, though, so they will send us part of the fee they earn for revenue sharing. This is not an extra fee, you'd be charged the same fee anyway, but now a small part of it is shared with Polynomial.
Apart from the standard fees from Synthetix, Polynomial charges around $1.25 fixed cost + 3bps of notional size is the total fee for limit/stop orders.
Keeper deposit: Dynamic fee given to the keeper bots to execute the trade (from 0$ to 10$).
Fees: 2/6-10 bps based on the market skew.
Limit keeper deposit (Charged by Polynomial): Fixed fee around $1.25 (depends no the network congestion).
Fees: 3bps of notional size.
The fees are only charged when the order is executed finally.
