The seller obviously is reputable given his 100% positive feedback on over 4k transactions. But I would suggest you simply contact them and just ask what is their definition of 'restored'? New spindle bearings? Recapped?
But keep in mind that the older TD Thorens series have issues with knocking and/or bent shaft motors that are no longer available new.
But keep in mind that the older TD Thorens series have issues with knocking and/or bent shaft motors that are no longer available new.