But at the end if you think a bit about it.. Why should any producer of ASIC actually sell their products as long as they can use it to mine and gain in one week much more money than the mining device actually costs? They all will all wait until time to ROI > 1 Month, and only after that sell the device. I think this is the reason why orders take so long.

In other words:

Nobody would sell a gold pooping donkey until it gets too old and is about to die...