Looking to by some 2007-2008 cards like Duelist Genesis.
TCGPlayer if you are in the US, CardMarket if you are in Europe.
You can try Yugioh Dank Deals on Fb
Reddit isn’t terrible
4Chan too
Most have already been mentioned, but here a list of the ones I bought Yu-Gi-Oh cards from thus far:
Webshops:
- TCGPlayer.com (English)
- TrollAndToad.com (English)
- GameTimeCC.com (English)
- Jakarade.com (Japanese)
- Yahoo Japan (Japan only, so requires middleman service)
Second-hand market:
- eBay.com
- CardMarket.com (Europe only)
- reddit.com/r/YGOMarketplace
- Yu-Gi-Oh related Facebook groups (don’t know any in particular for general Yu-Gi-Oh buying/selling/trading, but I’m active on some misprint-oriented Yu-Gi-Oh groups lately)
Greetz,
Quuador