hi
i am also one of those, that collect thematics, that are hard to find... that was my decision, my interest - but knowing, that i will have to circulate a lot to find my "gems"
I have cca 5000 stamps, that are "trading material", so i try to fulfil receiver wishes, but it is hard, and getting harder, because everyone wants recent stamps, small countries, Scandinavia (high catalogue value), no CTO, no definitive, no small stamp, no THIS - no THAT...
so just send 100+ stamps to club rules and it should be fine - but if you help receiver you can make his/hers day! and it feels good...
(but note, that (like everywhere) some shitthrowers exist and no matter how you try, they wont be happy ---- THATS LIFE)