I have no idea what a used one would be priced for now but I had a Richland Arms 707 (Italian built) 3"-20 gauge which was a very serviceable gun. My Son still has it. I hunted with it for several seasons, then bought my First Lefever so passed it down to my Son.

As already mentioned the Ithaca built Lefever Nitro Special or the Western Arms (Basically the same gun but with malleable Iron frame) are both stout serviceable guns. You are no apt to find a Lefever Arms Co 20 gauge within that price range if you do Latch on to it Pronto.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra