how much are they worth.

check what the last few on ebay have gone for. that should give you a rough idea. I know the 6g guys like to get them...

 

well, I have bad news from the ebay search. check this out: http://completed.shop.ebay.com/item...dhi=&_sadis=200&_sop=12&_rdc=1&_udlo=&guest=1

looks like they didn't sell too well there. so here's option B: go to servicehonda or ron ayers or whever, price a replacement set, then price yours one half of that. I usually figure anything used should be about 1/2.