Walmart and Straight Talk Wireless are offering the iPhone 4, 4S and 5 with no-contract monthly plans.
Straight Talk Wireless plans cost $45 with unlimited talk, text and data for 30 days. A $60 per 30 days plan includes international calling.
Without a data plan to subsidize it, Walmart charges the full retail price for the various iPhone models (from $449 for the iPhone 4 with 8GB to $849 for the iPhone 5 with 64GB). But they are also offering special financing with a Walmart Credit Card of $25/month with no interest.