Dropping a price by 50% a month after launch is just dumb and it's likely to confuse your prospective customers.
2BTC per miner is highway robbery and they knew it.
1BTC is just robbery.
Difficulty double up, so I think it is OK lowering the price.
Now they're at the same price when they started selling them.
They can't decide the USB's price, it is the market and difficulty. If Bitcoin changes fast, price needs to do the same.