Ivoclair returnable but if you don't have a certain volume I have had restocking fee.
Heraeus Basics I return. order from Zahn
Vita Talk with Laurie very easy return policy, can order single card but there are shipping charges, just like Zahn.
18008283839 ext 229 Your in IL so she is your rep, and if you find out you need teeth after the 1500 zahn cut off or 1400 ivoclari cut off, their in CA and so you can order up to 1800.
I stock Vita Classic & 3D master as that is what my customers want. If I have to order cadaver teeth (Portrait)I get them from Zahn, they are the only ones I know of where you can order a single tooth if you need it though. that is kind of nice but the shipping is often more than the tooth!
Oh buy back I haven't seen that they give you credit for future purchases.