If anyone is looking for a full set of the 6 mini-expansions from 2012, including the 7th (Crop Circles 2), there's one full set on ebay for a reasonable price (considering some prices i found when looking, up to £28 for 1 expansion.
http://www.ebay.co.uk/itm/201701108581?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITIt's a Dutch seller, and he has 1 set left. I have bought one a few days ago, so I'm waiting for the delivery myself as well.
Good luck!
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