All I can think is that it's gotta be a typo.
Does Paris, Texas have an airport?
They're guaranteeing the fare to "Paris" to be $99 each direction adding on taxes and fees. No other legalese is linked or in sight, so I don't know what the restrictions are (i.e. buy the lowest available fare, they refund the difference? or could I buy a full J ticket and only pay $99 per direction??).
Somebody tell the mileage run forum before this one gets yanked.