Materva yerba mate soda

I just had one of these the other day at a Cuban restaurant.
http://www.amazon.com/dp/B0000GIORK?tag=helubuy-20

It tasted a lot like apples and was very refreshing. But I balk at paying $8.00 for a 6-pack. Does anyone know if any stores carry it at a lower price?

I buy it (and sometimes Ironbeer) for about $1.50 in a two-liter at the supermarket. Have you looked in one locally? Failing that, have you looked in Latino grocery stores in your area?

Crapped out at the regular grocery store, then found it at the recently opened Latino-oriented store. Prices are higher than yours, but much lower than the ones online.

Thanks. I love this stuff.