I'm planning on purchasing a G1 Fortress Maximus soon. I'm looking mainly for a nice one without discoloration/yellowing and 100% complete. Boxed is ok, but I'm fine with loose. What are some of the big things to consider when purchasing Fort Max? What should I look out for? (Easily broken parts, repro parts I should be cautious of, etc.) And lastly, what price range should I expect to pay? I've seen some 100% complete, non-yellowed loose examples on eBay with BIN for $800+. I was about to purchase one, but I was told this was too high. For anyone who owns one, I would appreciate any insight you can suggest for me before I make this big purchase to get one my most awaited grails. Thanks!