What is the best/worst you've done when selling at a swap meet?

I used to do the local swapmeets until my sources of parts dried up.

Best I ever did was Moparfest in 2018.

Best score was two truck loads of parts for $200, and amongst it was a '69 426 street hemi block and a '75 440 short block.....and no, I'm not BSing, it's still mind boggling and a story I'll be telling my grandkids