Hard to tell in pic but the blades have about 20-30% of them worn off. Dont see any disk at the prices you mention around here. A small light 5 ft angle framed disk around here on CL are usually $300-500. Im in central Alabama.
Not much farming in our area. Was looking at this disc for hunting plots. .With its size I can put it in FEL and with bush hog on 3pt haul it all on my 18 ft BP trailer. With current disc to do that Id have to use gooseneck. One of the other members has a disc like this with 20- 22" blades and it cuts ground way better than my heavier 8 ft standard disc does with twice as many disc. This one looks like it probably had 18's on it, possibly 20''s.