Yes, I order in the US. The generic stuff I get is really pretty cheap. And it is good insurance.
I take the low dose- short acting. It's 20 mg. When performing, it keeps adrenaline in check. I rarely notice side effects. The dose is generally too low and doesn't stay in your system long enough for side effects. Generally, only if I'm taking it several times a day for long periods of time, I will feel wiped out, but once every now again doesn't really bother me.