I have a set up in SO (may have fallen off the end). The reason they're selling is that they were in a guitar that covers similar sonic ground to a new one I got. However I *really* like the pups so I'm not bothered if I have to keep them. The only problem there is that if I do, sooner or later something new/different is going to have to be constructed to drop them into.
As to why they don't pop up, because when you get sets you like, you tend not to sell them. I tend to sell guitars, but keep the BKPs out of them to put into other things.
Agreed, I nearly always return guitars to original spec when I sell them.
That said, I have sold several sets of BKPs, mostly because I no longer had an alternative use for them when I sold the guitar they'd been in (e.g. my purple/black zebra Crawler set). I do wish I'd kept the Abraxas neck pickup, though.
And I've bought at least three sets of BKPs from people on the forum, either directly or through Seconds Out.
I think they do show up fairly frequently in Seconds Out, but it's true that it's a trickle rather than a constant flow.
