I understand what you want to do, If it could be done, I think its a good idea. But, there would have to be trusted exchanges here on SR. Or SR could be the exchanger. I mean, If this was plausible, I would love to bring in 30 or 40k (if I had it, lol) worth of btc at the current value (7.0) and immediately get 10 for it. The biggest problem is there would be too much power in the hands of a few, unless SR were to step in and actually do this. but I think SR's answer to all of this is hedging. Also, I never keep any bitcoins in cold storage. When (if) I need btc's I buy it then send it on over. That way I don't get hurt on the btc fluctuation. I think the best bet is for buyers to open up an account at mt. gox or wherever, and you can put 1k dollars in your account then buy the btc's when you decide you want to purchase. It only takes a couple hours from purchase of btc to purchase of product on Sr. BTC usually doesn't move too much in that time. So, if the items are hedged, and buyers only purchase the btc when they want something will solve most, if not all, the issues.. I like your outside the box thinking though...