$800 would be a good buy. I'd probably pass at $900 though. It's basically a GI style gun in 10mm, which I never really understood the purpose of. If you're shooting 10mm, you're gonna want better sights that the ones that come on the gun. The ring hammer is dated looking, the grip safety is straight from the '80s, and the thumb safety is too small to ride your thumb on (if you shoot that way).
For the life of me, I never understood while Colt wasted all of those years before they FINALLY updated the Delta Elite with the things that other brands had already been doing for the last 10 years. Colt lost out big time on the 10mm trend. They were already tooled up with a proven 10mm platform before any of the other brands were, but they sat back in complacency while they let other brands catch up to them and then surpass them in terms of their 10mm offerings. Colt should be embarrassed. Especially considering they could have made a lot more money to helped stave off bankruptcy, but that complacency, in my opinion, is what lead them down the road they're on to begin with.