I've never used them, but I know about them and have heard quite a few stories about them.
If you want an idea of the integrity of the company, read this
http://www.netprofitstoday.com/blog/...pship-example/ and decide whether you want to deal with a company like that.
BTW Dropshipland and DVDdropship are the same company.
There's plenty of complaints about them on the net, a quick Google should tell you everything you need to know about them, though be wary of anything you read on a particular dropshipping forum that they sponsor as many of the comments are far from unbiased.
The problem with dropshipping on eBay is that so many of the other sellers will be selling exactly the same products as you, so you all end up cutting your margins just to make a sale. If you can find a wholesaler who is willing to dropship but doesn't do a lot of it, then you might be able to find a niche that'll work for you with little competition, but any of the main dropshippers are likely to have saturated eBay already
As far as costs are concerned, a self contained empty ecommerce store can be set up and hosted for a year for less than one month's fees for a moderate eBay seller. Your own store is far far cheaper than using eBay. The disadvantage of setting up your own site is lack of traffic when you first start out which can be disheartening though if you stick with it, you can soon change this and end up with far more traffic than eBay will ever send your way.
If you want to learn more about selling either on eBay or your own site (It really isn't as technically challenging as some people think) then just ask, there's a few of us on here who have years of experience in ecommerce.