I've found that most internet sellers; gunbroker, guns america, buds gun shop etc., have a list of FFL's that are already on file and willing to do business without attitude from losing business to the internet. If they're on file, it's less for you to do to arrange transfer and generally means they are internet transfer friendly.
One shop local to me wants $135 for a transfer and all the inventory is basically double what it can be had for on the internet. I tell the owner, who is a nice guy - would you rather have 10% of my whole budget or 60% of $100 when I'm in dire need and can't wait?