This deal has ended.
Amazon now has the Blackberry 8700g Phone for T-Mobile for $24.99 but it actually nets you $50 because of these two ($50 and $25) rebates totaling $75. The rebates are valid through atleast 5/23 when you sign up for a plan at Amazon. You can transfer your old number to your new plan online via Amazon. Plus, 2-day shipping is free and there is no sales tax. The Blackberry 8700g is $200 direct from T-Mobile before sales tax!