At the outset of season 3 of The Flash, Cisco Ramone is a genius, billionaire, playboy and philanthropist thanks to Barry's manipulation of the timeline.
While it's obvious that Flash will eventually have to undo the damage he's caused to the timeline, the one person definitely getting the short end of the stick is Cisco. He'll be going back to working as a freelance mechanical engineer (working with the CCPD and Iron Heights prison), which I would wager gives him a salary of about $75-80k given his employment at a high-profile company at S.T.A.R. Labs. He'll definitely be losing his newfound charisma with the ladies.
The Flash premieres this Tuesday at 8/7c on The CW.