If they shipped now, price would be ok. But to ship in Q2 or even Q3 would mean that price should be lower. Also there is no resale value with purpose built miners. Therefore price should be considerably lower compared to gpu.  Of course power consumption is lower but there is almost zero performance advantage in calculation power compared to GPU for the price.With current prices electricity cost is about 10% of the scrypt income. Therefore income has to shrink to 10% from current levels before GPUs stop coming to hashing!! There is also other scrypt asics in development but no anything close to shipping date from others.

Edit:6 month warranty is also no good when it takes over a year to make profit