I've created a Lego Dimensions Pack Guide for all the players just starting who need to know all the packs to buy to get all worlds and abilities! (Link for Google Doc
LEGO Dimensions E.T. The EXTRA-TERRESTRIAL Fun Pack 71258 - Brand New 883929529735 | eBay
Amazon.com: E.T. Fun Pack - LEGO Dimensions : Lego Dimensions: Et Fun Pack: Toys & Games