OK, these are pretty rare, and they are beauties.
There has been one for sale NIB on one of the national sites for quite some time for $2,200. For a collector-grade gun in this series, that price might seem high but I don't think it's out of the ballpark, as these pistols were only produced for one year. While I can't remember production numbers on these that I have seen, I think they were less than 300 and so these are valuable pistols.
GunBroker sales info only goes back for a few months, and there have been no sales during that period, but if I remember correctly from previously researching these, there were a couple of sales in the $1,500-$2,000 plus range there. Those would have been with box, papers, all the bells and whistles for collectors. Wish I could be more specific, but FWIW.
There was a sale of a new, unfired SD 356 TSW here on the Forum in early 2013 for $1,200. I think the same pistol today would be more, simply because prices seem to have risen since then on PC semi-autos, especially the rarer ones.
Attached is the rest of the product sheet for you.
The ammo is nice to obtain. Federal 147 gr. Gold Medal Match is the FMJ standard, and you can usually buy it for around $1 per round (sometimes a bit less, but I haven't seen it for less than .80 per) and sometimes it's offered in the $1.50 range but that's too high, I think. Also available in JHP from Federal as an SD round, and usually that's the priciest at $1.50 to $2.00 per.
I'd love to own one, but I'm not a collector and since I have the 3566 Compact, that's my .356TSW pistol. Just my humble opinion, but based on sales of relatively rare PC semi-autos recently -- without box and papers but in excellent condition -- I would be a buyer in up to $1,200 range.
Good luck!