There are definetly different prices according to the retail store, but I don't think it is quite fair to compare Kmart to a scalper. Reg. price of single figures are $6.99; right now they are on sale for $5.99, not much different before Target and Walmart lowered their prices awhile back.
The JTA are $25, but you do receive 5 figures so that comes to around $5.20 per figure, hardly a scalper's price. Is Target's 5 pack of clones cheaper? Yep, $4.00 per figure. However the JTA uses the #6 clone which is a better version than Target's 5 pack; the Clone Pilot is a waste and Anakin is a rehash vs new clones. However, all in all, the JTA pack is worth it for me. I got 2 of them.