Did anyone ever try the Tria? I have annoying arm hair that doesn't work with wax or shaving. Real laser is way too expensive where I live and I wanted to try the Tria out but I'm afraid it will not work.

I haven't tried it myself.  However, I looked on a few sites to read the reviews.  Amazon had the most helpful ones.  It's getting mixed ratings. 

Many say the hair removal isn't permanent.  The early benefit was all they saw.  Even after a year, it still grows back.

Others rave about it. 

Several complaints were about the poor customer service when the charger, or the Tria itself, broke.

Since it's so expensive, I recommend you read as many reviews as possible.  Just Google "Tria Reviews."

  (The NoNo gets worse reviews.)