Where did you buy these from? They don't sell retail apparently.I got 5 G Max helmets because they fit great and can be found for less than $30 on some web sites.
Here is just one design but there are lots. I got full faced helmets myself.
Here is what I got but they are 2010 helmets so might be hard to find this style.
I got 5 helm it's one in each size so people going riding with me don't have to buy one. ($150 for 5 helmets)
Some more G-Max helmets.