I still use my TXS nearly every day, despite having the whole line of Festool drills. The newer 12V brushless models are better drills, in the sense that they have more power in the same package, but the newer electronic clutch is nowhere near as sensitive as the old mechanical clutch on the classic 10.8V CXS/TXS, so they're worse drivers. A lot of the projects I work on involve delicate screwdriver work where fine control over torque and speed are critical, and the TXS is probably the most precise and controllable powered screwdriver I've ever used.
$75 is an absolute steal; you won't regret it. If the drill is all banged up, note that you can just order a replacement housing from EKAT. Switching out the internals is an easy task that can be done in a few minutes.