I 've been watching this HANA tour operated hotel in Insadong ,Seoul for a while.It is usually cheapest on Orbitz at $60-70 per night Few days ago there was a sale on expedia and orbitz as well at $40 / night twin or double tax included.

While not at the same scale as the Sheraton D-Cube at $25 a while back.
This new hotel price seems quite cheap,maybe too cheap.
will it be honoured? So far ,no cancellation from hotel or expedia, so the deal seems legit promotion