Doing a bit of bargin hunting for kids Xmas presents I noticed toys r us had a 10% price match policy (not sure if it's just for the toy sale or not)
Haven't done any other research in comparative prices on other items but I'm sure there is some bargains to be had.
3-packs can be found for anything upto $32, and I believe i've seen 'legendary' packs for ~$42! So a decent saving..
That is cheap for Skylanders, but with the re-release of the old skylanders so they can go to a higher level than 10 and with Skylanders Gaints coming out this year.
I'll wait as your kids will want the new skylanders games with the new skylanders.