Post (2010) also analyzed a second opaque product variant used by Freedom Air in which ‘‘the destination and the number
of nights at the destination were known, but the outbound and return flights were hidden within a customer-specified
time window until some time before the actual departure date. In addition, the consumer could vary this advance warning as
an additional parameter to influence the offer price.’’ The increase in airline profits from this opaque product was approximately
6% (Mang et al., 2009).