If department stores can still include Coach in their Friends and Family sales, then a lot of people will just focus on shopping in those locations versus at Coach directly. I don't know many people that would wait around for a semi annual sale that *might* have the bag they want, when they can just go buy what they want on sale at one of many department stores.
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Case in point. I live near Copley Square in Boston. I buy my Coach bags from Lord & Taylor which is literally steps away from the Official Coach boutique in the Copley Square Mall. I actually have never once bought anything, except for Coach cleaning products, from the Coach store. The prices are always better at L&T. Coach is not included in the usual F&F discounts (which are basically available 365 days a year now), but they are once in a while, but the handbags (and shoes) frequently have sale prices.