Hi Cookie. You're welcome to use mine! I'll pm you with it. Not sure if it's still valid (it's pretty old) but worth a try.
I haven't used Vitacost a lot, but I've saved a boatload of cash on the odd time when I have, and some of my family members use them too. Some products are pretty expensive in NZ and it's cheaper to get them shipped over from Vitacost than to buy them locally. I found them a good company to deal with - it was pretty hassle free all round.