I've owned 3 sets of Magnepans and a current set of Acoustat speakers, all purchased used. 3 of those sets were sight unseen. The 2nd pair I purchased from ebay, they were damaged which may have been a result of shipping. The seller had me send the speakers to Magnepan for service at his expense.
There are still honorable people out there, just be careful and selective.
Enjoy the Music