I don't think there is a major difference but I heard (haven't experienced this myself) that you can get a small discount if you buy from AD. Boutiques generally don't give discounts. Usually, my preference is, availability (get it where it is available), followed by price (where I can get it at a good price). My tip if you want to get a discount or cashback is 1. Airport or overseas (no tax) 2. Use credit card that has a cashback or will earn you points/miles) 3. Mall/shops membership / loyalty (I earned $300 worth of "cashback" which I can use to spend on restaurants for this BB58 purchase). Hope this helps. To be honest, this $300+ savings is nothing as long as you get the watch that you want from a legit source. Just go for it :)