There is also another outlet mall (Las Vegas Premium Outlets) located about 10 minutes or so from New York New York (about a $10-15 taxi ride) between the strip and Downtown Las Vegas. They have a Dolce & Gabbana, Tahari, etc outlet. Go to Premium Outlets and register for the VIP club to receive even more savings.
I would also check out the shopping mall on the other end of the strip near Treasure Island and Circus, Circus. It isn’t a discount mall, but they have some great stores, like Neiman Marcus and Saks. Since it is the end of the season, these stores are probably having pretty good sales. Some people like the pawnshops (which, of course, are EVERYWHERE). Personally, I feel kind of creepy buying something that was someone else’s misfortune. However, if a pawnshop had a pair of Cartier gold and diamond earrings for less than $500 bucks I would purchase it as quick as you can say “bankruptcy”.