JM and Windexed, I agree that I much prefer Amazon Marketplace. I buy from them all the time. I like that it's all protected by Amazon and they can suspend payment if the shipment doesn't arrive and whatnot. It's a beautiful thing. The only thing that makes it lack is that the only stuff you can sell in the marketplace is stuff that Amazon sells in its e-retail center. No rarities or special or discontinued items. So, for that stuff, you have to go hunting in eBay or elsewhere.
I haven't purchased anything from eBay since about 1998-99 when I was going on an Atari binge. I bought a used 2600 system and a bunch of games. I was hooked on eBay and uBid (I think that's what it was called). But everything was money order. Maybe if there is something I just can't live without, I will start to look on eBay.