Hang in there and be patient. I was in the exact same boat as you were last year with the same budget and mind set. I eventually let myself to wait another year and have a higher budget to $1500. I was specifically looking for a WWFRR but after many attempts and failed to find one I broaden my wishlist. I settled on a very nice condition rollergames and have no remorse. During my year of waiting, I looked on different sites like here and Craigslist to see why type of pins that would show up in my new budget. I am very confident that you can find a space shuttle in your price range. Be patient and keep digging. Good luck.