The price would only drop if there were extremely high volume resulting in mass production. The kind of volume required for mass production is probably ten thousandfold greater than the increase of competitive men dancers due to the recent surge in popularity. So mass production is not likely anytime soon.
Until we see as many tailsuits as iPods, you're probably not going to get a chaeap one off the assembly line. So your only choices right now are custom made or used. Used is obviously cheaper, but the trick is finding one with the perfect fit. If you do, consider yourself very lucky. If you don't, you might have to stick with a vest suit for the time being, and start saving your money.
Regards,
Jonathan