It's just strange. First there's a 2-day $30/60/90 sale. Then a week of $30/60/90 Dings. Now those $30 fares are $49, with $48 Ding sales. If you can decode the puzzle, you'll be the first.
I did so well with the $30/60/90 sale that I have little left to Ding! or refare.