Comics from 50+ years ago (especially the early Marvels) and earlier can be worth heaps -- the first Superman went for two million or so not long ago.

But comics from the last few decades can scarcely be given away.

Anyway, I'm interested I what DOES sell on eBay currently 🙂 Not mega-rarities that are impossible to get, but good reliable items that tick over nicely for a decent profit.