I have the following mobile-hotspot devices I'm selling:

Freedompop Photon: http://www.freedompop.com/photon-review
Freedompop Stick Bolt: http://www.freedompop.com/bolt-review
Freedompop Mifi 4082: http://www.freedompop.com/nationwide-mifi-review

They all work great and can be activated for free on Freedompop's service (gives you 500MB free per month, plus an additional 500MB if you add "Freedom Friends"; additional data is 1 cent / MB which is still quite cheap). The Freedom Stick Bolt and Mifi support 3g and 4g; the the Photon is 4g-only. I'm just selling them because I'm switching to Karma which has faster speeds ( https://yourkarma.com/invite/geza928445 ). Name the highest price you're willing to pay for it - it'll go to the highest bidder.