Just won via ebay:
Cool Cool Jam (BNIB),
Metal Slug 2nd Mission and
Puzzle Bobble Mini.
So that means I've now got
Cool Cool Jam (NGPC) and
Cool Cool Toon (DC) but still can't source the damn NGPC-DC link-up cable for an anywhere near reasonable price.

NGPC collection now consists of:
Card Fighters Clash - Capcom version, Card Fighters Clash - SNK version, Cool Cool Jam, Falslei!, Fatal Fury, Gals Fighters, King of Fighters R2, Metal Slug 1st Mission, Metal Slug 2nd Mission, Neo Turf Masters, Pac-Man, Puzzle Bobble Mini, Puzzle Link, Puzzle Link 2, Samurai Shodown! 2, SNK vs. Capcom - The Match of the Millennium, Sonic Pocket Adventure, The Last Blade