BTC Miners

I think the current rate at which BTC miners increase in price is a bit odd. Why does buying a small miner have the same impact on pricing as buying the large one (+20%). If we aren't able to sell miners, I'd at least like to see the prices increase based on which miner you bought instead of a flat rate, or keep the +20% increase for the bought miner type and give a 10-15% increase for the other two.

WIP