Clearwire is now offering New York residents its high-speed WiMAX Internet service, making good on a promise made earlier this year. The service will initially cost $35 per month if users decide to upgrade by the end of September. The rate jumps to $55 after the first two months. The first 20 people to sign up are also eligible to receive a free WiMAX USB stick that can roam to Sprint's 3G networks. The stick otherwise costs $115.