This could be anything that was made as a separate purchase, online or offline, but recently. Today I bought a small metal screw at a hardware store for 1/400 of a $1, which is the smallest currency in use in my country. Have you had any experience with smaller transactions?
So, I am building a cloud service getcloud.doshare.me , it is supposed to be affordable so the cheapest plan is at $0.2 or 19 rs but this could definitely be the cheapest thing I bought online, even though when people buy plans over Paypal it charges 0.4$ per transaction so technically I'm giving out money in return of cloud storage. Can something be cheaper than this?