To answer your question, yes, the game and DLCs go on sale periodically, nothing super crazy, usually topping out at about $5 off or so.
In the spirit of teaching a person to fish and all, you may find IsThereAnyDeal useful. It’s got price histories for most platforms and key vendors* and if shopping sales and bundles is your thing you can set up email alerts.
* personally, I like Fanatical or Humble, (and Steam) since their keys are all nice and official, but if you’re grayer markets are your thing those are there too
That one’s probably less Randy and more mods doing weird things. PsychicSensitivity is a spectrum trait, meaning that once the game picks a trait for a pawn it then picks a degree level (ie deaf/ dull/ sensitive/ hypersensitive). Under normal circumstances it shouldn’t pick the same trait twice.