I've read it once on this forum but its very rare (very YMMV). It wasn't really a refurb, more like a "opened box but never used" macbook.
Open box is often referred to as refresh. They are 10% restocking fee open box that are resold after a wipe of the drive at the 10% off price. Refurbs are not available at retail stores, only online.
I couldn't think of that word (refresh) when I had originally posted but you're right about the rest.
yes that's what you want to ask for a 'refreshed' machine. You can just call your local store and ask if they have any. My machine is a refreshed one.
So you were able to get 10% off ... or more? No issues with yours?