There are several reviews on youtube. I believe they didn't have too many problems tolerance wise when new and can be manually calibrated. There are a few discussions on the forum here about calibration and upgrading safety.
Asking if a meter possibly 5 years old with an unknown history will still be as accurate is a coin toss. $30 USD is not too bad value wise, I would make an offer though. The meter came with a pouch, probes, temp probe, USB data cable, alligator clips.