Ask your carrier/employer
We have a four dumbphone family plan with Verizon Wireless.
NATIONWIDE TLK&TXT SHARE 700 (no longer available, of course)
Monthly Account Access Charge
Monthly Line Access Charge for 4 lines
700 Shared Monthly Allowance Minutes
Per Minute Rate After Allowance: $0.45/min. Peak , $0.45/min. Off-Peak
We have three other lines at $9.99 each, with another $5 per line for taxes, fees, because-we-can charges, etc.
Our total every month: $120.02.
This may sound like a no-brainer but check with your employer for discounts. My husband is a state employee (MI), and that takes off a very nice 19%. Unfortunately they don't give a discount for data plans, including Jetpacks.