The sellers requiring FFL for shipment never get the same prices as the guys playing by the rules... The whole CYA thing gets tiresome, we've bought and sold hundreds of guns without so much as a peek at a drivers license back in the day, I've bet a paycheck not one of them was used in a crime of any sort...
Now in Colorado, we have to undergo background checks for private sales. At least for the time being; there are quite a number of sheriffs that refuse to enforce that particular unconstitutional law (violation is a misdemeanor) and I'm sure constitutional challenges will follow.