Gees Donna, I really don't want to advise when it comes to used equipment over the internet. I would say yes if it were a dealership where you can get "hands on" usage before you buy, but E-Bay...I cannot say.
Those, as you know, are very expensive monitors, but they are worth every penny. They kick the crap out of any I have ever heard, and I have heard many. I wish I had a pair, but the ones I have work well enough, that I never gave them another thought. (That's what I tell my wife, and I'm sticking to that story)
Tom