First trick is finding a good one. While these may be the giant killers they are old and given they were sold as run of the mill players, likely many owners did not care for them, so finding a quality one, especially after all the hype now not so easy. I am weary of the few models I have seen advertised.
Given that a Loricraft(similar concept) is going to cost over 10X, for a 501 new model and close to 5X for a good 401, same with Teres, Sota, etc... high-end tables still going to keep my eyes open for a Lenco. Meanwhile saving up for one of the expensive but quality commercial models in case my patience wears out.
So count me in line if your friend wants to sell, if Pics can be provided to show motor/platter unit not damaged. Which is still hard to completely verify via photos but can at least catch an obvious flaw. Still a gamble until arrives and can inspect in detail.
Adding all this effort up, if you have time great, but ironically for me time is much if not more of a constraint.