I posted a few pages back about my solution to try and ease the pain of the additional $10/month for the Evo by requesting the same 10% discount on my contract that Sprint offered me a couple years ago.
Rather than just asking for that discount, I went for the credit union discount instead. For anyone who doesn't know, Sprint offers a 10% discount for being a member of a credit union (pretty sure ANY credit union). I just went to the Sprint store, they glanced at my membership card for 5 seconds and added the discount to my account (should apply in 1-2 billing cycles). In and out in five minutes. I tried to do it over the phone first but the lady tried to spell Michigan with an 's' ... not sure I could trust her.
Anyway, go join a credit union if you're not already a member of one and get your 8 bucks (if you're on the $70 plan) knocked off!