We were paying 80 bucks a month for a family plan plus one line, so two cell phones at Verizon.
I switched to a bare bones verizon plan for $25, and added $5 for 250 texts a month. I rarely talk on the phone. I do use texts sometimes, like to ask DH to get something while he is at the store after he already left, ect.
DH switched to a Tracphone, and just charges it with minutes when he needs to. a text message counts as half a minute. I think it runs about 10 bucks a month. He really didn't want a cell phone at all, but we live in the country, his car is starting to get unreliable, and we live somewhere that gets -10 and blizzardy. So a cell is needed I think in case you get stranded.
We have no landline, but did get a Magic Jack, so we can make as many calls as we want from home for 25 bucks a year.