AM needs to help the balance of power by selling the 'right amount' of asics to single miners. The network was projected to grow quite a bit faster but with Avalon's slowdown and BFL's crawl it is still under 100Th.
Just think AM has 200 Th the rest of the network has 100 Th total 300Th. Bad case scenario. For a long plan. So AM needs to sell just enough hash power at the right prices. As for the right price being 2 BTC for a usb stick and 50 BTC for a blade I would argue a little lower would be better.
Maybe 1.25 BTC and 35 BTC. Very hard to judge since I am an outsider I don't know what avalon or bfl will do.
Also pierrejo's point is valid sales will slow and AM can lower price.
as for the USB miners, I think either the price drops or the minimum drops. But, they won't be doing that, so we'll just have to watch how it develops. I think if the USB were priced at 1.25 btc, they would have been sold out by now.