If you were OK with slower speeds they have
"Mobile hotspot data included.
Keep all your devices connected at max 3G speeds." at only $40 each for 4 lines.
https://www.t-mobile.com/cell-phone-plans
I might do it once Comcast screws me over.
I did have mobile wifi at only $20 a month for a while but the service got continued. :( It worked awesome and was better than my Comcast service plus it was mobile It was 4G community.