It really doesn't save you a whole lot of money on firearms transfers.
The license is $200, IIRC. Then you have your local occupational license.
So you have that fixed cost of about $100 a year. It saved me the $25 transfer at the pawn shop, so that sounds like 4 guns a year and you made your money back.
But then you have sales tax. It was great when I bought a $100 gun online, because the transaction cost me $7. But when I bought a $500 gun, it cost me $35, which meant I lost money having it shipped to the house. We have 7% sales tax, so any gun over $357 was cheaper to transfer at the dealer.
On the other hand, a lot of dealers don't like accepting transfers from private parties. I would usually do well on gunbroker auctions from private parties, because a lot of people won't bid on them. And most distributors will sell to you wholesale, which is a plus. Of course, on most new guns it's only going to save you about 10%.
IMO, it's much better to have a friend with a FFL, than to have a FLL. It's like having a friend with a boat. All the joys of having a boat, but without the hassle and expense of maintaining it.
