This is not just unusual, it is impossible to be legal - the normal cost is US$50 per month, sometimes there are discounts as low as $30 for a few days. Unfortunately there are many sites offering this sort of thing. They are stolen. In fact, they are often normal subscriptions, paid for by a stolen credit card. So they work when you first get them, but soon the person with the card notices, and cancels the card. Your subscription of course stops, and things could get worse. It is best to avoid this sort of "bargain", especially because the seller might now have your card number, and be using it to pay for the next batch of stolen software.
It is odd that the license disappears completely, but perhaps this is what is recommended by the police.
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