That depends on what sort of candy bar it is, where you live, when you buy the candy and in which specific store you shop.
A nickel.
25c
I don't know for sure, but I think the average cost for a candy bar was around 5 cents.
$1.00 Because if they are 50 cents each, then: 0.50 + 0.50 = $1.00
if you're buying 2 candy bars, then 1.00.
About 2 shillings.
10 cents
50 cents
Around 35 cents
5 cents
about 80 cents to $1