Hashrate/$ is on the high side, but the Cubes and Blades are one of the few options that you can buy and receive immediately at the moment. Most other offerings are small batched and may not see them again for weeks or months. These later ASICs will be much better in terms of price/performance, but are at least 4 months out.

As for question 2, Im sure Canary has another batch in the works following this order.