Many years ago I found a bunch of complete PC Engine Hucard games at a Ham Radio club electronics swap meet. Picked up about 40 games for $2 a piece. Lots of decent titles like PC Genjin 1&2, Ninja Spirit, Magical Chase, plus a good number of shooters. This lot is still the bulk of my PC Engine collection today.
Also about 10 years ago, I went on vacation to the Philippines and found a large department store (forgot the name) that sold everything from fresh food, clothes, electronics, furniture, etc. They also sold a lot of pirate games and systems. In a cluttered glass case I found a single PC Engine game Armed F that was something like $10. I bought it mainly because I was excited to find anything PC Engine there. Surprisingly they also had 2 Turbo Express systems NIB for something like $300 each.