I've had mine about 10 years now and have bought from Gunbroker, Auction Arms, and here on the forum, as well as some gun shows and local gun auctions and gun stores. It is very handy and quite a few merchants like the no hassle of the transaction. I don't do too many, I'm still on my first book, with 3 renewals. I still find that only about half my purchases are C&R.