Sell it now, while Agassi is somewhat relevant. There are people in my age bracket (40+) that reminisce about the "days of old", and still believe they can wield that frame, not realizing they aren't as strong as they used to be.
In addition, many of them have 'disposable income' and are willing to pay top $ for that experience. Take them for all they are worth...
"Nobody beats Vitas Gerulaitis 17 times in a row" -- Vitas Gerulaitis, after beating Jimmy Connors on his 17th try.