I have seen this too many times.. I was trying to sell INT- world fuel services.. it is 47$.. i was trying to sell the june 50 call bid .60 ask .85 now I use IB.. and most know that in Interactive Brokers , if you change your order you are charged a fee since I want to beat the ask. i thought of putting 80 cents. but my experience told me that as soon as I put 80 cents.. the damn auto programs will match my ask. and I will be lost in the crowd.( infact I can see my lone order pushed back in the level II screen) hence I put 75 cents.. and guess what? i was the sole ask at 75 and the 85 cent asks got auto lowered to 80 cents... the reason I am posting this is , since my goal is to minimize commissions. was this the best strategy. .when u see a big spread in the bid /ask, ( and other factors looks good for the trade)put 2 increments away from the ask , or else the auto trade programs will drown you.