Ordered my '75 Gremlin for the build-off. Happened to go into an antique shop today on a whim. There were some models there, AMT Porsche 9-something racecar, '55 Cameo, normal stuff. Those were all $10. However, I walked past a row of puzzles, and at the bottom I saw an Airfix logo! I walked out with an Airfix Bugatti EB-110, unopened inside but a little water-damaged, for $7. Not bad!