I had my iPhone 5 on AT&T and had been paying $120/mo for it after taxes.
There is a company called Straight Talk (similar to redpocket) that sells unlimited talk, text, and data on AT&T towers for $45/mo. Straight Talk doesn't sell iPhone 5 sized sim cards, but there's a guy on ebay who sells them with a guide, and they work perfectly.
http://www.ebay.com/itm/170930638764
Only downside is there's no LTE, but the 4G HSPA+ does work and is still fast as fuck.
There is a company called Straight Talk (similar to redpocket) that sells unlimited talk, text, and data on AT&T towers for $45/mo. Straight Talk doesn't sell iPhone 5 sized sim cards, but there's a guy on ebay who sells them with a guide, and they work perfectly.
http://www.ebay.com/itm/170930638764
Only downside is there's no LTE, but the 4G HSPA+ does work and is still fast as fuck.