Also FastTech.com Some items are very inexpensive:
Knockoff, I assume?
http://www.dipmicro.com/store/index.php -- I found this through another forum member, and the prices are great. While they are primarily Canadian, they do mail from Niagara Falls, NY so you don't get customs. I was impressed that each of the parts I got were labeled in plastic bags, as I bought my original UNO from a vendor that just threw all parts in a single plastic bag.
Thank you for the very informative post. I am checking out alot of these sites. Lately I have bought some starter kits and am new to the community.