DISCLAIMER: This is not an advert or a desperate attempt to get traffic. The site has virtually no content yet and was registered in the last 24hr I just want feedback on it as a concept.
You are awesome.
The site is looking tight, but yes empty as you said it would be, just a good simple wordpress set up that already puts your site a million times further ahead than most the other start up sites I see. I guess the only thing I would say is abuse the categories since you will be so focused on specific goods. Have a category for each company maybe? I'm not sure the full mining market and what they go for, so I guess not knowing the rest of all that, looking good. Good luck.
Edit: Maybe take out wordpress text. Also look into affiliates within the community here. I am guessing with e-commerce linking directly to related things is not as nice as a blog would be, but look toward blogs to link exchange maybe. Don't make referral links so dominant if you are going to have them as your main links. Maybe a 'we accept bitcoins' logo or something (they have those premade graphics on bitcoin.it)