I am very disappointed that Verizon does not offer a unlimited data card plan, or provide options for users to help control bandwidth.
Virgin Mobile offering data card service, unlimited, for $40/month now.
T-Mobile and Cricket offer 5gb plans, but promise no overages. Instead... they will simply throttle speed if the limit is reached. They will not stop service or charge you overages.
I will happily pay the early termination fee to save $20/month on my wireless internet costs and no longer have to worry about how much bandwidth I use. (This is of higher concern to me since I often use my air card with a router to share internet with a few people around me).