The ten cheapest are:

$0.90 – $1.58 Delhi, India

$0.97 – $1.28 Mumbai, India

$1.04 – $1.73 Cairo, Egypt

$1.14 – $1.71 La Paz, Bolivia

$1.17 – $1.87 Manila, Philippines

$1.22 – $2.03 Mexico City, Mexico

$1.23 – $2.94 Panama City, Panama

$1.23 – $1.68 Kuta, Bali, Indonesia

$1.24 – $1.86 Fez, Morocco

$1.29 – $1.94 Kuala Lumpur, Malaysia

I am surprised that Panama City and KL make that list, otherwise it fits with the Bela Balassa hypothesis about cheap services in low productivity countries, or at least those with low productivity laborers at the margin, such as Mexico. Panama City has quite a large percentage mark-up for time spent in traffic. The most expensive rides are in Zurich, Switzerland and then Oslo, Norway. I recall seeing a small pizza for sale in the Oslo airport, priced at $35. The full list is here.