Buying speakers ten or more years old a good idea?

Unfortunately some speakers that are 10 years old no longer have parts available....some do.  But some have proprietary drivers that are long discontinued.   Especially a speaker like Thiel....  custom proprietary matched drivers .   B&W  CDM tweeters are no longer available.   A lot of the older KEF coaxial drivers are no longer available.     But some speakers like Klipsch Heritage can still be serviced no matter how old....   do your homework on parts availability first would be my best recommendation. 

Haha ,sorry didnt realize that thread was so old....

been trying to upgrade from original andras and cant find anything better yet - and have been listening to really top stuff costing 25k and more 

I just recently bought a pair of psb500 loudspeakers (made in 1992) with the factory recommended stands from the original owner who still had the manuals. I agree that the technology in speakers have not advanced like the amps and receivers have. I think, if taken care of, once a good speaker always a good speaker. I wasn't familiar with the psb brand and after a little research, I realized I was getting a pair of speakers out of my price range for well within my budget. Loving them!