Virgin Mobile offers its Virgin Mobile Overdrive Pro 3G/4G Prepaid Mobile Hotspot (pictured) for an in-cart price of $71.99 with free shipping. (Search "Overdrive Pro" and scroll down to see it in the first row.) That's the lowest total price we could find by $48. It can provide Internet access for up to five devices at a time and features a 1.7" LCD display, 1GB RAM, and microSD card slot.

Buy Now

Also available is its prepaid Virgin Mobile U600 3G/4G USB Stick for an in-cart price of $29.99 with free shipping. (Search "U600" and scroll down to see it in the first row.) That's the lowest total price we could find by $5.