Quote from loufah:
It depends on what your goal for the trade is. If an option is $3.20x$3.40 and you generally want a 20 cent profit per trade, when opening the position it's worth trying to buy the option for $3.30, and then cancelling if you don't get it at that price.
Sometimes, the spread is so wide and there are no other market participants other than you and the MM, so you have to negotiate with the MM. I was trading options yesterday that were sometimes quoted at $.70x$1.30 with a delta of .4, and a 2% move in the price of the underlying didn't change the NBBO at all. So you have to try various prices inside the spread until you get a fill.