It's arguable if these are worth the asking price, but they have the very great advantage of being available right now, as opposed to in a month or two. The only reason that ASICMINER can charge such a high premium for the Block Eruptor products (the blades were priced at 50BTC per unit, which amounts to a hashing power / BTC value of roughly 400MHs for 2BTC. That sale was massively oversubscribed) is because they have no effective competition at this point in time. If Avalon ships on time we will start to see competition late July / early August at which point I suspect we will see a version 2 with similar price point but 2 - 4 times the hashing power in a similar package from AM.