A man went to a peculiar shop and enquires about prices. The dialogue between him and the shop owner goes like this:
Man: How much would 50 cost?
Shop-owner: 30 cents.
Man: How much would 5 cost?
Shop-owner: 15 cents.
Then how much would 100 cost and what kind of items are sold/bought?
Assume a normal and fair trade happened during transactions.
(Courtesy: Online /internet)