Same here, really... everything I've sold or traded was part of a learning curve as I slowly figured out what worked best for my tastes. But as a couple others also said, I have passed up a purchase here and there that I regretted not jumping on sooner. One that still stands out was a S&W Model 19-4 Nickel (I think it was a -4) with a yellow front sight, sold right here on INGO for a very good price, but BBI got to it before I could make up my mind. I didn't make the same mistake the next time I saw a very nice 19-5 on here. I still have it, and reached the seller not even minutes before the next buyer. I even paid a bit extra for it so the seller didn't have to make change. Got lucky on that one, it's a keeper.Never sold a gun l didn't want to keep...