10 GB of usage for $80 might be for many and AT&T does not have this.
http://news.cnet.com/8301-13506_3-20021016-17.html?tag=TOCmoreStories.0
According to Verizon, the carrier is offering four data plans. The cheapest option offers 1GB of monthly data for $20. The prices go up to $35, $50...