I put together my complete set of 1 oz. s1 including display case at an average of $72.75 USD per coin while silver was in the $35 USD range. Definitely over my goal of $65 each, but I really wanted them.
Here's a link to the ones I picked up, added a dragon today: http://forums.silverstackers.com/topic-11989-picked-up-a-snake-goat-pig-rat-and-ox-silver-coins.html Dragons are the most expensive, check ebay, around $120+ USD and everything else is in the $75 - $100 range from my research.