Why Does This Candy Bar Have Three Different Prices?

It’s time for yet another exciting installment of “No, seriously, how much does this item cost?”
In the case of these candy bars that Victor found at a Walgreens store, the shelf tags would actually make sense if it weren’t for that “2 for $1” label on the product’s package.

No, Really, How Much Does Yogurt Cost At This Kroger?
Target Redefines “Price Cut” To Mean “Add 37 Cents To That Price”
Office Max Proudly Advertises Their Fuzzy Pricing Math