Spotted 8 boxes of these at Target. $4.90 each! I grabbed 4 packs and happy to report that the dots are on the back bottom pf the pack. They are just tiny little blister like circles and can be hard to see but they are there.

Brothers Brick had a guide on what's what:
http://www.brothers-brick.com/2010/1...ts-on-the-bag/

It can be hard to see sometimes so best to feel for particular unique parts for the particular fig you want. Brothers Brick also has a guide on what parts will feel unique in the bags:
http://www.brothers-brick.com/2010/1...rough-the-bag/

Happy hunting!