The Verizon post paid costs $15 without autopay and data overages cost $10 per GB with or without autopay so 4GB with autopay would cost $40 and $45 without autopay.
[doublepost=1527986873][/doublepost]US Cellular has a no overage Tablet plan for as little as $10 for 1GB $15 for 2GB $25 for 4GB $40 for 10GB $90 for 30GB. Unfortunately they are a regional carrier so depending on where you are live you may or may not be able to sign up for service with US Cellular unlike other carriers which offer nationwide rather than regional service.
[doublepost=1527986999][/doublepost]The US Cellular tablet plan is a post paid plan called total plans which claim to have no hidden fees such as no activation fees.