Encoreman:
I had one in .308 for a while, and it was a pretty dang neat rifle. As you said, top-break, mine had a SUPER sweet trigger. You had to mash TWO buttons to release the safety, as I recall. Mine shot about 1.5" with a wide variety of ammunition---but my bench technique is about a 1.5" technique. (I simply don't get worked up about shooting small groups off a bench or a rest, I admire it but it's not what turns my crank.)
So if it was so cool, how come I got rid of it? I'm a fool for the idea of a "perfect single shot rifle." The TCR just wasn't . . . quite . . . elegant enough to satisfy my monomaniacal cravings. The Ruger No. 1 comes closer, and I still have a couple of them, in .30-06 and .45-70. If the Ruger is 90 percent of my idealized single shot, the TCR was maybe 85 percent.
They are definitely interesting and cool rifles. If it was me in your shoes, and had never owned a TCR, I'd bite if it was a good price. "They ain't making 'em anymore."
At the same time, the break action is a pain at the bench, you pretty much have to completely break every point of contact with the rifle to reload it.