Yeah, that's the problem. The volume is not there yet and if you sell the GPU's at market value, only a few IPOs can afford it. You can't mine 3 million by the time the store opens (unless you're a big dog, pretty sure they don't need a 280x) and you can't even buy 3million at market value right now either. It's just going to be too much trouble for people, might as well pay the extra bucks and get it online some where.
This is an example of how I see it working I sent a PM to Hendr1x and he has posted it in the pricing discussion on the official forum. There isn't much activity there so I thought I'd re-post here.
I'm not saying this is perfect, the whole point of putting it on the forum I guess was to pick holes in it and see where it may fall down.
Current BTC price is $628
The price of a 280x according to the front page is $435
Current GPUC price is about 0.00000033 BTC
So if I wanted to buy a 280x now it would cost me 0.69 BTC or 2,090,090 GPUC (0.69/0.00000033=2090090)
As the price of GPUC rises the amount of GPUC I would need to purchase a 280x would fall.
As the majority of miners may for example only be able to mine 500,000 GPUC over the course of say a month they would then need a further 1.5 million GPUC to be able to purchase the card. They could mine for 3 more months or they could go on an exchange and buy some more GPUC.
The advantage to buying the remaining coins instead of mining them is that as they buy up the coins from 0.00000033 to say 0.00000044 the price on the shop front as it is directly linked would fall, so instead of needing to mine a further 1.5 million coins they would only need a further 1,068,181 GPUC
You can see how this would constantly create the need to purchase GPUC as well as mining it. It also has the advantage of you would be getting you GPU's at a lot less $ than if you bought them directly with fiat.
I think I like this Idea. But does the price change realtime or does it change twice a day? I think if it was realtime there would be problem with people placing a buy order for a few GPUCoin at a crazy high price just before they purchase with GPU.
Whereas if it changes twice a day to be the average of the last 12 hours or some such thing, this could make for some interesting market movement.