I don't think he's talking about grocery stores/department store prices. Ten years ago, in convenience stores , a regular candy bar was .69/.79 cents. Now a regular (not King Sized) bar will run you anywhere from 1.19-1.29. This is in NC, where the price of most things tends to be cheaper than the rest of the country.
But yes, at Wal-Mart a regular Kit Kat bar can still be had for .79. Ten years ago it was .39.