Little Weirdos blog and just had to get my hands on them.
The bag includes 20 figures, but to get all the Batguys and Robindudes in all three colors I had to buy two bags. They are pretty cheaply made, and many of the figures in all the bags I saw had a lot of flashing around their seams. Additionally, many figures have black flaws in the plastic, so just look closely when you get your bag and be sure you're happy with the figures you find. Or buy a couple bags.
These things make great Halloween treats, party favors or stocking stuffers. Go get some!