ThinkGeek has sets of six Star Wars Geeki Tikis (Series 1 and Series 2) on sale for $38. Add one of each set to cart (12 total) to reach $76 + $0 shipping ($75+ free ship minimum) = $76 shipped for both complete sets (around $6 for each tiki glass).

They also have other collections (Star Trek, Guardians of the Galaxy, etc) on sale for the same price.