Autloading shotgun prices are driven by industry, hype, and a fear that anything that isn't semi-auto has too much recoil. It is especially hilarious when you take apart an autoloader and see that they are very similar to the construction of a pump.
I have an 11-87. The extra barrels and accessories for it are almost twice the price of Mossbergs 930 series accessories. For that reason i am interested in making a change over to Mossberg(I also like the tang safety).