Paper clip trades are a good way too. These can be made with junk items as well, some people offer a little bit more of the item's worth and sometimes add other items too. Usually I do it with codestones. 50k worth of codestones, tag it as paper clip trade and get some amazing offers. Recently a girl offered me 100k + bb pb to one of these. Don't know if she was being generous or really naive, either way I was happy for the trade.
I feel a very strong urge of putting @Menthix* inside a card box, put the box in the back seat, drive to the kennel and leave him there for good, every time he decides to eat banana with mayo. Dude, that's disgusting. Get your shit together.
I see some on eBay for like $6 which has about 9 twix minis. They ship from Portugal though and it says it could take 9-21 days for delivery.
There is also a box of 20 standard size on Amazon for $80.
I didn't mention to @Athayde that I bought them in Spain and not in Portugal, I can't find them where we are currently living. Small towns disadvantage? It's a special edition, there won't be many to be sold anyway.