The cost of basic deployment, from a price list I've been given, is:

WiFi server equipment: $17,000 before taxes

User equipment: $530 per, before taxes

So if you wanted to pay for 1,000 users with one tower assembly, you'd need to spend:

$17,000 + (1000 x $530) = $547,000 before taxes

or ~$600 per customer for initial equipment charges. And that doesn't factor in manual installation charges (gotta hire the people to do that) or the cost of the bandwidth itself, and so forth.

The $30,000 figure is good for 30 users. That could make sense for certain types of small-to-medium-sized businesses.

There are many applications for this kinda independent wireless gig .. but the costs are, as ever, still too high for most people.