I bought a new Ruger LC9 on December 8th, 2011.
$309.99 - Cost of LC9
$ 25.00 - DOJ DROS Fees
$ 22.47 - Sales Tax
$357.46 - Total Cost
Total cost is well under the $500 of your limit.
I believe that's a pretty decent price for this handgun....especially in California. God I hate California politics. California is a beautiful state though.