Re: Yes, I would purchase one (maybe 2 or 3) if... @picturethis
I think you're very lucky. The T30 was a bit of a bogey machine, the worst of any of the Thinkpads that I've ever had. Don't get me wrong, I kept my T30 running for as long as I could, but...
The T30 was the first Thinkpad that was completely made in the Far East AFAIK, and they got the mechanical design a bit wrong. They are notorious for the RAM sockets to break solder joints. Finding a T30 with both memory slots still working without some paper wedged in to put pressure on the slots is a very, very rare thing. I think that the designers recognised this, because there was no T31 or later T3X systems, and the T40 was launched not that long afterwards. I think the motherboard was put under some strain, because several of them I've had have had different types of foam pads to act as strain relief, but they never really worked.
I know Thinkpads are repairable. I had 4 different motherboards in my T30, and eventually resorted to re-soldering the RAM sockets myself, but I don't have a re-soldering station, and using a normal dry soldering iron to melt the solder already there eventually burns the surface mount pads off the motherboard.
I kept it running until I could no longer find any mobos on eBay, and the ones I had could no longer be re-soldered. I eventually decided to replace it with a T43 (this machine) when I could find one with a Dothan processor (and the cost dropped to lower than a T30 mobo, even one not guaranteed to work. But the hard disk (swapped out of the T30 to keep the 'machine' the same even though it's different hardware, is flagging SMART errors, and large IDE 2.5" disks (100GB+) are also getting rare. Core 2 duo T60s (with SATA hard disks) are beginning to look cheap on eBay at the moment, so I may switch again, but this swap will require copying between disks, not just a disk swap.
T30's also has a definitely silly bit of design. If you tried to remove the disk with the lid shut, you were guaranteed to break the top left corner of the bezel. It is such a common problem, that if you see a T30, it's almost certainly broken there.
If there was a modern Thinkpad, in approximately the same form-factor as the T20-T60 ranges, available at a reasonable price, I may just skip to a new one rather than a used one. But, unfortunately, I think Lenovo will take the interest as a sign that people would pay a high price, and they will introduce them at ultra-book prices. If they do this, they've not really looked at what people want.