I was looking for some Davinci Spectra multivitamins and found a great coupon on eVitamins [evitamins.com]
for 20% off the most expensive item in your order with code XMASGIFT. Shipping is free over $49, but many items below that have free shipping as well.
Looks like they carry all sorts of vitamins, supplements, protein powders, etc. Here's their summary:
We offer more than 25,000 name brand items including vitamins, herbs, supplements, whole foods, baby care, bodybuilding, pet supplies and more! When it comes to maintaining a balanced diet, a healthy body and an environmentally friendly home, we've got you covered!