I bought a very nice Miroku 20ga side by side (not Charles Daly marked) with dual triggers choked full and improved cylinder for $300 a few years back. Deals are out there to be had. The store had it marked low because, according to them, nobody wanted a shotgun with two triggers and extractors.
I have one of the same Miroku Double SXS shotguns , like new, but in 12 ga.