Yeah, my wife seems to have gotten somewhat addicted to it in Brazil. After some google searches, it seems like a market on north Lamar sells it...called Shahi. Will have to check it out. There apparently used to be a Brazilian market in Austin that is no more that had it.
No, it's the most popular soda in Brazil. It uses the same fruit, tastes almost like a redbull as redbull uses the same thing in theirs, but without the "energy" and costs of redbull. Probably a good substitute for redbull in jagerbombs.
Have you tried Fiesta? I haven't been to one here in Austin, but when I was in Houston it seemed that they had a ton of ethnic stuff like that. Would probably be cheaper than World Market if they do.
Spec's has it, seen it with my own 2 eyes. Even in diet variety. Always check the sell by dates, and bear in mind it may not be cheap at Spec's... but I promise I have seen it there many times.