For me, I like to know the condition of the gun I'm going to spend hard earned money on. You buy a car, you want to know the miles, you take a girl home one night, you want to investigate the " mileage " and the same with guns. Knowing the rd count can give you a few chips when offering a price you're willing to pay. Too many people on here list their Gen3 Glocks on here with 500+ rds through them for $500 bc they have Glock night sights and a holster. To me that gun is lucky to fetch $450 and me personally would find it tough to pay anymore that $400.01 and a box of tacos.