Of course there will always be a auction up or two. eBay seems to not care as much anymore seeing as it pays (although a small amount) for some asian kids salary. Not seriously. They just get overwhelmed and don't get them all.
Before you beleieve any rumor you may hear, selling any account, game item, game currency, or whatever is stictly illegal. Why? In almost every game, if you look closely enough, it states clearly in it's ToS that selling thier property is against the law and is not allowed. Thus, it is not legal, and if caught you will most likely get banned. Plus, they alert the company, company traces your account, and before you know it all your accounts are gone too. It's as simple as that.
A big raid quite like that happened on Galaxies a long time ago. Several players lost huge amounts of illegal money without even knowing it was frauded.
My recommendation is to sell your accounts to the companies who specialize in selling them. That way, you still get money, yet you won't hear any shit if something bad happens. I would also recommend not buying accounts anyway, as you will probably login one day to find it suspended.