I got an FFL in 1971, had a shop in my home for 6 yrs. Lotta paperwork for a little bit of savings. I did less than $10k per yr in business. Sorta wish I had stuck it out and went full time. A lot of the priv FFLs now are internet sellers on gunbroker.com and auctionarms.com. All legit businessmen, just no shop no hours no onsite pickup.
Sadly a lot of FFL's went by the wayside during the Komrade Klinton years as our fearful leader and his AG Janet Renokillemallinwaco. It got to be too costly then, as now, to just try to sell a few guns a year. Thing is now the jackbooted thugs at the BATF are picking on larger and larger totally legitimate FFL dealers in a backdoor effort at total gun control.
Read up on the BIG father son gun shop in Idaho if you want scary stories. Basically the BATF is doing to FFL dealers what it did to Randy Weaver in northern Idaho. And it isnt going to get better when Billary Obama is elected. The 2nd Amendment survived 8 grim yrs under Klinton it'll surely survive the coming 8 grim yrs.