Rares: cost $0.75 each
2, 3, 11, 12, 23, 24, 37, 38, 42
Uncommons: cost $0.50 each
7, 19, 22, 26, 27, 30, 36, 41, 43, 44, 46, 49, 50, 51, 59, 60, 61, 62, 63, 67, 69, 70, 71
Commons: cost $0.25 each
4, 5, 6, 13, 14, 15, 16, 17, 18, 20, 25, 28, 39, 40, 45, 47, 52, 53, 54, 55, 56, 65, 66, 68
The cards images can be found here.