I have the MOSSBERG 590 MARINER on sale for $484.99. I have limited quantities so if you are interested check them out here:
http://www.jlowesguns.com/MOSSBERG-590-MARINER-12-GAUGE_p_203.html
http://www.jlowesguns.com/MOSSBERG-590-MARINER-12-GAUGE_p_203.html