Nobody is comparing the cost of an iPhone in the US to the cost of land in East Africa. They're comparing the cost of buying an iPhone in East Africa to land in East Africa.
Different places have different costs of living, and many consumer goods and services adjust to that in different markets. Apple is notorious for setting international price points insanely high relative relative to local price points.
Are apple prices insanely higher compared to other brands offering exactly same product? Not sure about East Africa, but quick check for South Africa shows that Toyota RAV4 (+30%)[1] or PS5 (+23%)[2] prices are adjusted up from the US counterparts.
Different places have different costs of living, and many consumer goods and services adjust to that in different markets. Apple is notorious for setting international price points insanely high relative relative to local price points.