I see that companies are selling 80GH/s like AMT
https://advancedminers.com for $1500 with a 3 week delivery time
http://www.bitcoinx.com/profit/ calculates to a ROI in 21 days...
My newb question:
Why would a company that builds these boxes sell them when they can make more $$ mining than selling hardware?
How do I get my account upgraded here to post on other forums?
Those companies don't have enough money to pay for the production of the devices.
So they do pre-orders.
The problem with pre-orders is that while a device looks great now it might not do ROI anymore when you hold them in your hands.
Don't trust the delivery times of those companies.
Almost none of them have ever kept them.
Only buy devices that are in stock and will be delivered the next day with UPS, DHL, or any other fast shipping method.
Otherwise you might loose to much.