I have a friend who is selling his M&P9. It's had some work done on it, but it comes with the original holster, double magazine carrier, 3 back straps (S, M, and L), a gun belt, and he is also throwing in 50 rounds of 9mm. I have put 100 rounds through it at the range (he let me borrow it for a while to see if I like it, and yes, I like it. A lot). He is asking $450 for it. Also it's the flat dark earth frame, black slide kind if that changes the price. Would this be a good deal or should I ask for a lower price?