Now that Steyr is making the A3M1, the exotic and unique nature of the A1 isn't really of value any more. I still would consider it, since the scope is a little slimmer than what they are selling on the A3M1, but overall, you can get a brand new rifle from the same manufacturer now for about $300-$500 less, with a few product improvements like the bolt lock/release, 3X glass vs 1.5, and a couple extra rails. Along with the ability to replace the scope with a rail or a different one.
The mags are worth about $100 all told, since new ones (which would be new, by the way) are about $20 each.
Basically... unless the slightly slimmer profile scope has considerable value to you, I'd pass and just get a new one. People who hung on to A1's as a long term investments lost - because they are no longer limited or irreplacable. The subtle differences (deficiencies to most people) are not of value in the US market, as this countries buyers aren't going to value the historical nature of an early generation AUG.
Personally, now that I think on it, I wouldn't be interested unless the price was closer to about a grand. It's a used out of date model - to be blunt about it.