Not sure when this changed... But, this makes Cricket the best deal out there, imo. We've been on the 5 lines for $100 plan for about 4 years. These days, it is 4 lines for $100. They've gone from 3GB to 5GB to 10GB.
10 GB Plan:
1 Line - $40/mo.
2 Lines - $70/mo.
3 Lines - $90/mo.
4 Lines - $110/mo.
5 Lines - $130/mo.