According to Eric Rohrbaugh the guy who built the guns and a site member, there were a few thousand 2 tone stainless slide, black frame models made, $750-$1100. A few thousand Stealth models made, all black, $1500-$3000 range.
There were also a 150 TOTAL of 4-5 different models. $2000-$4500. Those are for the die hards or collectors. Your best bet, just for carry, is the basic two tone model. I got my last one like new in original box for $900. Since you don't need the box they do appear, time to time, for $700-$900 just for the gun itself.
You can get mags from some guy on G-broker for $100 or put your name on a list with a newer company and get them for $50.I will e-mail you the name if you want it. Quick reloads you will NOT be doing. You must press the mag UP into the grip to release the mag. As a BUG one mag is all you will probably ever need but most guns are sold with two mags. Wolff made all the springs and are still available, recoil springs are only $5 and should be replaced the first time you clean it then every 200 rounds, if you ever put that many through it. Most of us shoot a few rounds and put it away. I keep mine loaded with 6 in mag and 1 in the pipe. I don't think I have ever read of a jam with one using GOOD PROPER AMMO. The ONLY thing more reliable would be a brick.
You MUST use any of the standard pressure 9mm ammo. I use 115 gr Winchester JHP's but others use Gold Dots, or Silvertips just NO +P AMMO!!!!!!!!!!!!!!!!!!!!!
I bought one just to see what they were about and LOVED it. It is not a gun to put a box of ammo through but 3-7 rounds ( 6+1) isn't too bad on the hand. I now have two with another on the way and am looking for another two tone. I am 6' and 180 and it fits in my right front pocket in a Blackhawk #2 and with jeans is invisible. It also rides very well in a ankle holster.
Good luck,
kevinqjhps