Lowe's offers the Hitachi 5/8" to 2" 18-Gauge Brad Nailer for $39.98. (Amazon charges the same.) Plus, MyLowe's members bag free shipping. (Not a member? It's free to sign up.) That's the lowest price we could find by about $6. It features a selective actuation switch and visual nail reload indicator.

Update: The price has increased at Lowe's; however, Amazon still offers it for $39.98 with free shipping.