Amazing what you can find on the internet! I can't find the link any more, but check this out.
If you are buying something from Pottery Barn which is worth putting in some work to save some money (it was for us :-) ) here is something you can do -
-Create a registry for an event dated the next day
-Add what you want to get to it.
-Wait for a day. You will get an email about your registry list, giving you 10% off for all the things left on the registry _after_ the "day of your event"... (Now you know why I said date it only 1-2 days away)
-Buy what you need for a 10% discount...
Simple! And worth it when you are buying a king size bed, drawers, etc etc............