Cavalry comparison

[Nestor]

Couldn't find something about regular payments but in two incidents, Alexander the Great gave to retiring soldiers the following payments:

-after the death of the persian king Darius (330 BC): cavalry 1 talant=6000 drachmas, infantry 10 mnas=1000 drachmas

-329 BC: cavalry 2 talants=12000 drachmas, infantry 3000 drachmas

In the roman empire 1 denarius roughly equals 1 drachma.

Looks like that the cost of cavalry was 4-6 times the cost of infantry.