We currently have 2 lines on Edge.
We wanted to add a 3rd line for my youngest, but Verizon is pushing me to finance a device for 2 years which I don't want to do for a 1st phone. It either has to be a old phone we previously had on the network, or a pre-paid phone that has been "seasoned" on the pre-paid network for 6 months.
I just want to be able to buy a $30-40 phone and add it to our plan. I won't worry so much if it gets lost or broken at that price.
Verizon's solution was to add insurance on top of the financed phone for "piece of mind" - thus pushing the monthly cost to $40-45 easy.