If you can get them for $10/each on eBay, I say go for it. This 2 pack is worth $10 anyhow since it's 2 figures @ $5/each x2 = $10.
Most people really need to hunt a ton of Wally's to find these anyhow. My WalMart didn't even have the display left, and the manager said that the clone 2 packs were "all sold out" and that they weren't getting anymore. So I went up and down every aisle in the toy department and the bicycle area and found EIGHT of these value packs lying around here and there, in bins, behind other toys, on the floor. And this is after being told they didn't have any. My advice is if you don't see a display, just hunt every aisle I think you may find one or two.
But if that doesn't work, $10 on eBay is still a pretty good price, particularly for the ARC/white clone 2 pack, but not so bad for the other 2 either.