The ROI is BS out directly from them. It's just marketing because others were doing it. If you get $1 from it you have your ROI.. it does state you'll get profit. just a return on investment, or in other word you got $1 back for your $6K
"If the network increases so much that the next level miner also cant meet ROI,
the product upgrade will continue to the next AMT product which is profitable."
From investopedia:
Definition of 'Profit'
A financial benefit that is realized when
the amount of revenue gained from a business activity exceeds the expenses, costs and taxes needed to sustain the activity. Any profit that is gained goes to the business's owners, who may or may not decide to spend it on the business.
Yes it is marketing, and if they don't honor it then it's false advertising
http://definitions.uslegal.com/f/false-advertising/ . It is a crime to falsely advertise,
http://www.ftc.gov/news-events/media-resources/truth-advertising .
See, words have meanings. Especially words in the context of business. Now what that says is that your machine will be profitable or they will upgrade the machine until you have a machine that will be profitable within a 6 month time period of estimated shipping.
We didn't write it they did. And it's important to hold them accountable to their word. And if they won't hold themselves accountable, there are other parties who will. But perhaps I'm just being impolite.