Just got back from my local TRU. They are running a promotion for B1G4 free sky landers, except imaginators. Almost all of them were $2.98, so you could get 5 for $2.98. So, it works out to $.60 a piece! Picked up a variety from Trap Team, Superchargers, Swap Force. Looks like they are running the similar promo online, but a lot of items are out of stock. https://www.toysrus.com/search?q=skylander&page=
I posted a pic of the promo and a small sample of what I found. Ended up getting 25 for $15. Also, picked up the Supercharger starter pack for the Wii U for $9.98. Not as good as a previous deal, but good enough for us.