Converting 30 minutes of BetaMax to VHS or vice versa. Must have seemed like a no-brainer business opportunity at some time.
Neighbourhood electronics store, Sangenjaya, Tokyo
A bundle of 25 stick toothbrushes or to strictly correct chewsticks. The design is relatively sophisticated - pre-bristled.
250 Afghanis (10 Afghanis per stick).
Titanic Market, Kabul, Afghanistan.