But if you would like some assistance in informing other eBayers about this particular scalper, I wouldn't mind sending a few emails.

Careful, they can claim auction interference and get you booted from eBay... Of course that would only mater if you use eBay frequently. If you don't and just want to harass them, sign up and knock yourself out.

BTW, the seller did nothing wrong by the rules, it's just not good business practice...