Jumping in quickly here.
Some of the 2011 especially could be worth quite a lot, and also many collections had one rarer than the others, therefore pretty expensive in fact, 2011 or 2012.
So please don't get talked into letting them go for 2 or 3K before knowing exactly what you have there.
You could try contacting Kayleigh McMillan, who has loads of collectibles, knows that market and i know will give you correct estimations. I'm not sure who else specializes in collectibles these days.
I myself have quite a few so you can check out the prices at my store if you like :
http://slurl.com/secondlife/Isle%20Enigma/44/94/22
You will find other sellers price lower and some higher than i do.
Good luck and don't rush into any sales that you may later regret.