There were just two. I think next might be in the fall.
Official Sales Alert thread - Page 1841
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Not exactly what you're looking for, but Onward Reserve carries several options and there is currently a Gilt City offer for 100 for 50, 200 for 100 or 500 for 250. However, it seems that they are all sold out at the moment and the Gilt City promo must be redeemed by August 12.
Depends. I've gotten a $95 shirt for $20, a $400 coat for $240, then that same coat later during a seasonal sale for $99, along with another coat that's normally $420. It's well worth a visit. Definite potential for your mind being blown.