I have looked at two plans. One from Verizon and the other from Cricket.
Verizon has a $40/month plan for 50MB throughput - seems really like a lot of money for nothing.
And Verizon has a $60/month plan for 5GB throughput - not much better given the charges of $0.25/MB going over the allowance.
Cricket's plan: $40/month for 5GB and just slowing down the throughput to 256kbs according to my conversation with their sales people, if you go over the 5GB allowance.
Here's the url for Cricket I've been using: http://www.cricketwebspecials.com/?imm_cid=08-0C
My experience with the phone companies has taught me to be sure that the monthly amount I'm sending em I personally type into whatever method of payment I'm using for the monthly billing. The auto payment plan I've had with at&t would every six months or so wind up with some extra charge I hadn't expected. I'd have to call and get those extra charges credited - a real pain in the ass procedure as you might imagine with at&t.