I don't know if this is apropriate or a good idea, but I'll pitch it anyway.
Say if some member would really like to try one of the more expensive whiskeys but didn't want to buy a whole bottle, then they could pitch it here, and anyone else who would like to do the same could chip in for a bottle. If there was enough interest...
For example, a Willie Napier... If there were ten people interested, it could be bought for 50 euro each, and each buyer would get 7 cl . Or maybe something cheaper - Bowmore 25, whatever.
I won't be offended if you think this is a rubbish idea. It's something that just popped into my head.