Yes, I ran into a good deal, but I also know how to gauge their worth. One of these kits went for $570 on Gunbroker.com. Star Z45 parts kit Z 45 set : Parts Kits at GunBroker.com
You wanted to cut off negotiations when I asked for a better offer. So, when I got a better offer, I took it, and both parties are happy.
As far as concience goes, I called MGS 3 times asking to talk to Jerry to exchange the kits. Each time, I was told that I would be called back "in a few minutes". I have still not received a return call. I have done my part.