Questions I'd Like Answered About Ebay

Ahh, Ebay, my 3rd or 4th part time job. I just love getting rid of things that we just don't need. I don't have to clean around them or organize them, or wash them or just plain keep track of their whereabouts. I'm ready to list about half of the contents of my house at the moment.

Here's my question: Why is it that I can list McDonald's Toys till the cows come home and sell them for way more than they are worth...I guess people collect this stuff?? And, more importantly, why is it that I can list really good stuff, like unopened Nintendo games, and not get a single bid...not even a watcher?

And while I'm at my questions: When is it time to dump and run? In other words, once I've listed and gotten a NO SALE, then I re-list for free, and still: NO SALE. Do I try again, and again? Keep in mind, this is the good stuff, not the McDonald's toys, they were shipped weeks ago.