At that price, are you sure it's not USR rather than an AUG? They look the same, but the AUG is much more costly. The only AUG (NOT "USR/AUG") I have seen for that low of a price was $3.5K and was well used, came with no mags, no box, etc. Mind if I ask where you saw them for that price, because if they are AUG's and not USR's, $3K for a preban AUG is a steal of a price, and since AUG's can't be imported any more, they will only go up in value. A very good investment.