I went last year. First day during "press" time. Everything was fully stocked minus bags and shoes. So if you are looking for RTW you are in luck, but (good) shoes and bags were scarce and a lot of women were hovering like hawks.
RTW was around 60-70% off. There were two racks of clothes from previous seasons that were either samples or store returns. Those ranged from $50 to $200.
Also, apparently second to last day it was so ridiculously cheap. However if you want the best, go the first day. Also, clothes that were being tried on get dumped back into these huge cardboard boxes which takes forever to be placed back onto the racks. So you go back and it seems like there are new stuff!