FreedomPop offers its FreedomPop 4G LTE Nationwide SIM Kit bundled with a FreedomPop Premium Unlimited Talk, Text, 2GB 4G LTE Data 14-day Trial and the FreedomPop Phone Premier Trial for $1.99 with free shipping. That's $4 under buying this SIM kit with only 1GB of data elsewhere. (For further reference, we saw it with 2GB Unlimited and Phone Premier monthly trials for 1 cent in our January mention.) It's compatible with most unlocked GSM smartphones.

Note: Be sure to switch to the free 200MB/month plan before your initial free 14-day trials expire, or you'll be billed $32.98 per month.