Design a Logo - Online tech seller for (ebay store and amazon).

I have a logo I barely made in 3D in photoshop. It's to promote my starting online selling trade mark. I don't know how long will be in the market but I do want to start with something way cooler than the crap I have. Remember that it has to be cool catchy and think on me selling alway high tech new or used stuff. But do not make it to corporative as I also want it kind personal customer service. Totally new Ideas accepted.