I would be shocked if they got $150/ unit for the meters. People keep forgetting the markets they are trying to sell in.
For example, let's say they sold a batch of meters in Lagos. The average annual income in Lagos is around $3,000 USD. That's $250/mo. You think the driver will spend $150 on a meter?
A decent motorcycle in Lagos is less than $1,000.
The average annual income of a cab driver in the US is $30,000 or $2,500/mo. Do you think a cab driver here in the US would spend $1,500 on a taxi meter? It's the same percentage of income.