A. 11 pounds? My Rashis and Rabbeinu Tams weight 11 pounds.
B. What dates are $198 RT?
C. I was responding to the $300 NYC-Paris. A normal carry-on adds $100 RT. A stingy 44 checked bag adds $136 RT. Seating together costs extra.
May as well have bought a ticket on a real airline for less than that.
For my Iceland trip WOW was $200 less than the other options - after paying extra for carry-ons, checked bags,
and extra legroom seats. Even taking into account NY-BOS flights it was still slightly cheaper.
So long as you make sure to look at the "real" cost, it could sometimes be a very viable option.