i weigh my options, i have a few dear friends that will scout for me in their various cities and try to find deals for me, and if the bag is older and outlets, i'd rather take my chances with outlets as I've had fantastic luck with Lindsey and always paid lower there than ebay as for non-outlet available I go between friends and then ebay.
if ebay has my perfect placement (authentic, good price, good seller and everything), I will definitely get it. Otherwise you may not find it again. Unless you want to take the chance to wait for outlet...but keep in mind that they may not have the placement you want.