>>21069885>30 DTE spyokay cool so its super liquid and the bid/ask is relatively tight. the one I just pulled up has a bid/ask of 9.43 to 9.50 with a mark of 9.47.
if you just click "buy" you are going to pay 9.50 and get jewed. if you type in 9.47 its going to instantly fill and save you $3 (this is what you "tip" your other brokers for) or you could manually enter a number and wait for a fill that's even better than you would get on your other brokers if there is a pullback
look at the low of the day... add the contract to your watchlist and look at the low for the week even and enter a bid near the low for the week