Grade should be stamped on the water table. For a guide of the engraving style by grade go to the Fox website. Sounds like an A grade.
http://www.foxcollectors.com/Forends for ejectors will be harder than extractors forends to find. Forends are harder to fit than butt stocks. Ten times the surface area to fit and ejectors make the wood quite thin in several places. I would far rather find a gun that needs a new butt stock than a new forend. Easier to find a take off or even to make one from a semi inletted blank.
Price sounds like it is fair but no great bargin. First step is to check to see if all the forend parts are present. The right side problem may just be that lousy forend interfeers with normal operation or worse. Real problems with missing, bent or broken parts. Offer $600.00 for the gun and you should be alright. Any $600.00 Fox in decent shape is a buy in my book.
Post on the Fox site and hope someone has an extra forend. I think that one person is already looking for one over there already.
