I remember back in the good old BMI days they had similar error to this Kate Spade error with figleaves.com. I cant remember the exact rate that they offered, but it was fully honoured, and about GBP 150 spent on undies for my (now ex) wife resulted in enough BMI miles for a round trip miles plus cash redemption from SIN-LHR in F on SQ. It was the 747 sky suites and IIRC one of the sectors got swapped out for the new A380 suites on which redemptions were strictly forbidden at the time. Good times!