Hmm not sure if I should jump in here, since I know absolutely nothing about goth or any other kind of bizarre sexual fetish.
BUT, I'm pretty sure some will find this informative:
A friend of mine runs
http://www.bloodurge.com/ - probably not your average goth site, if it's even that. But it is extreme. And extreme sells.
The site is designed by a top adult designer which doesn't hurt conversions either - and no traffic leaks for Slavik to worry about ;)
Over and out.