Wal-Mart carried the line... Not as heavily as TRU and K-Mart, but I found them at several WM stores. Mine still has about 8 or 10 Bilbo figures and I think a lone Legolas chilling.
I think 2-packs maybe were a stretch... All singles would've been fine, but if you were gonna do 2-packs I think you shouldn't have duplicated to single cards then, and had singles be like Gandalf, elves, the theoretical customizable Orc army builder, Goblin (would've been nice if he too was "customizable" to a degree to look different/variety), Thorin, and so forth... The other dwarves would've been kinda neat as the only 2-pack format figures then save for perhaps an Orc Paint/accessory variation 2-pack for a baddie 2-pack...
It would've helped.
Anyway though, my WM stores that did carry the line didn't have 2-packs iirc. Just singles. And no deluxe that I recall either, though the deluxe line was pretty much just the Orc/Warg.