The municipally owned network will cost $3.3m in St. Louis Park, Minn.: The heavily canopied Minneapolis suburb won't pursue private/public efforts, but will finance its own for-fee network. The service will run from $15 to $30 per month, with rates starting at 128 Kbps to 1 Mbps for that range. ARINC and Unplugged Cities (a local firm) will build the network under contract. They city needs 32 percent of consumers and 15 percent of small businesses to subscribe to recoup costs. The city has 45,000 people in 20,000 households, so the numbers a little confusing--does one subscriber in a household that's sharing the service count as one "consumer"? I would guess they're looking at 6,000+ subscribers. The city has relatively little wireline broadband available from incumbents, according to this article.
Update: See local localist Becca Vargo Daggett's comments below that clarify all points; Daggett is with the Institute for Local Self-Reliance.