"In the era of Emperor Augustus (27 B.C. to 14 A.D.), a Roman centurion was paid 15,000 sestertii. Given that one gold aureus equaled 1,000 sestertii and given there was eight grams of gold in an aureus, the pay comes to 38.58 ounces of gold. At current prices, this is about $54,000 per year.
The centurion who commanded 80 legionaries is roughly equivalent to a U.S. Army captain. The current wage for a captain is $46,000 – which is fairly close." Roman centurions and the price of gold today
Claro que hoje, um salário da mesma ordem de grandeza adquire hoje muito mais bem estar, dado a descida (deflação) dos custos e preços em termos de esse mesmo ouro.