This answers the question. Forgot about stamp fee and was only thinking about resale value - just like selling a firearm. The value only comes from the original purchasers pleasure while using it.
As far as having baffles replaced /repaired, I'd bet that this costs about 1/2 of the original purchase price. So, if purchase price was $600, then repair would be $300 or so. Just conjecture.
But it saves you the $200 stamp. That makes it a deal.