I will make all of them available individually and as a set. The full set will end up having a cheaper cost per medal though. My third option (as long as it works) to further reduce cost of the set is to combine them with small tabs into 1 object. This will result in 1 start up cost as opposed to 10, which will save you even more money.
I am certain that the high detail materials from shapeways (frosted and ultra detail) will print accurately at these sizes. Therefore, those will be the only materials available at the beginning. Once I can confirm that the other materials can print the details accurately then I will make others available as well.
Look for a thread in the Junkyard soon. I will have pricing info as soon as I get the models uploaded tonight.