https://marco.org/2007/07/16/that-assumes-that-you-get-your-treo-680-rebates
That assumes that you get your Treo 680 rebates sent in correctly, including the one that has to be sent with a copy of your 4th wireless bill no earlier than 120 days after activation and no later than 180 days after activation following which you will receive your rebate check in 60 days which you must cash within 90 days.