They have the maverick 88 model for $169 or lessalso. The only difference between the Maverick 88 and the 500 is the safety. The Maverick 88 has safety on the trigger guard. But it's basically the same gun. The barrels and other parts all interchange as well. But it is just a basic gun with synthetic stock etc... Not sure what you're using it for.
Just a heads up on the Maverick 88, about 95% of the parts are interchangeable. The fore grip is one item that is not according to some aftermarket dealers I have spoken to. They are indeed great guns and I have owned Mossberg's for over 17 years and never had a problem with any of them.