I bought a used ThinkPad T430 more than a year ago. I can't tell you exactly how much I paid for it because I don't recall the price in dollars (I paid it in Argentinian pesos).

It's a little battered (The case is broken in couple of places, the track pad is worn out).

The only complain I have about it is (2, actually, so "are") that you can't pump the memory that much (16 GB max) and the low resolution of the screen.

Besides that, I think it's an incredible piece of hardware.

Right now, I'm running Debian 10 with 16 GB of memory and a 1 TB SSD. I think it's very likely that I'll extract at least another 5 years of work of this one.

It comes with Bluetooth (Works with Debian), and I managed to make even the fingerprint reader work with this OS.