n 193 AD, after the death of Commodus, a wealthy oligarch named Didius Julianus bought the throne of the Roman Empire.
With Sulpicianus on the inside and Didius Julianus without the two men began to make offers to the soldiers for their support. Monetary offers were waged against one another until ultimately Didius Julianus purchased the throne for 25,000 sesterces per Praetorian, according to contemporary historian and senator Dio Cassius. (With 10 double strength praetorian cohorts of approx. 800 men, the total payment may have been as much as 200 million sesterces or 50 million denarii). The Historia Augusta suggests that Didius Julianus actually ended up paying some 30,000 sesterces but another contemporary (Herodian, though a child at the time) disputes this entirely, suggesting that the funds simply weren’t available to make good on the promised payments.