FreedomPop offers its FreedomPop 4G LTE Nationwide SIM Kit bundled with a FreedomPop Premium Unlimited Talk, Text, 2GB 4G LTE Data 1-Month Trial and the FreedomPop Phone Premier Trial for 1 cent with free shipping. That's a buck under our July mention and the best we've seen for a 4G SIM kit from FreedomPop. (It's also $14 under buying this SIM kit with only 1GB of data elsewhere.) It's compatible with most unlocked GSM smartphones.

Note: Be sure to switch to the free 200MB/month data plan before your free monthly trial expires; otherwise, you'll be billed $24.99 for every additional month. If you don't cancel the FreedomPop Phone Premier trial, that will be an additional $7.99 per month.