I would be most interested in a T-bolt, new or used, except they are too much money. I can't even begin to think how many rounds I would have to fire to get my value out that gun, and to do that, I would have to ignore my other .22 rifles, which ain't happening.
Honestly, as cool as I think straight-pull actions are, if I am spending that much for a .22, the name is going to start with an "A" and in with a "nschutz". With the reputation that the Anschutz name carries, I think I can have a reasonable expectation of fine accuracy and excellent function. In other words, I know exactly what I can expect when I plunk down my cash. I don't know whether or not that is true with the T-bolt.
Of course, with that being said, the rotary mag of the new T-bolts evidently functions like crazy, and it is a really cool rifle. I can't justify the expense, but neither can I deny the coolness.