Rodland is far more common then PAM and SC (but still quite rare), it's just a very high profile game which is why it's so expensive
for PAL NES some of the ESP games are crazy hard to find (all of the 3 above games are ESP coded)
PAL PS1 has some really rare games aswel, mostly early releases without the Playstation border (Hebereke's Popoito, Philosoma etc) or late releases that came in low print runs like Blockids and Destructo 2