Someone clue me into how this works

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http://androidforums.com – So it seems that a lot of guys on craigslist are advertizing that they can get data on Verizon's network for really cheap. Even cheaper than Boost Mobile's 50c a day plan. Verizon MiFi 2200 Remote Flashing Service | eBay Scroll down lower in the page and under the map of Verizon's coverage you'll see that they're offering $15 AIRTIME CARD = 1 MONTH $30 AIRTIME CARD = 3 MONTHS $100 AIRTIME CARD = 12 MONTHS I'm scoured Verizon's prepaid side. I cant find this deal anywhere? Obviously it exists as a lot of folks on ebay are doing this. Someone clue me in. (General)