I don't think you need to be a reseller to try to get a good deal on something
A few times I've checked it and got an item at a great price. I've never bought anything that way to turn around and sell it right away.
It has its purpose. Resellers will always be present in the game. I really don't think they do any harm unless they're manipulating. If people didn't pay the prices they jack them up to, the resellers would be out of business pretty quickly. Thats a whole different thread tho
and many on the subject.