That's a great list. Problem is it's not accurate. I chose the shop I wanted to use for my FFL transfer based on distance from that list. But when I actually contacted the shop, their price for a ffl transfer was double what gunbroker said it would be. You still need to call them and find out for sure what they charge. My shop said their price had been that high for over two years.
I think it's a good "starter" list. Meaning don't go by what the price on gunbroker says it is. But it gives you a large collection of phone numbers and addresses in your locale, that aren't always listed in the phone book. I recommend calling a few of the numbers and verifying their prices. You may find someone who does FFL transfers who's closer to you than your local shop for the same fee. May even make a new friend that way.Yes, that "finder" on GB cannot be trusted at all.
I tried to find one near me and found the same thing. Many had much higher fees. Some never got back with me at all and one had all sorts of restrictions on pick-up times and another only dealt with CHL holders.
Not accurate...and not worth it.
Try all the gunstores. Pasadena Gun Center only charged me 25 bucks last time and it went very easy.