I don't know what you play but I can recommend some awesome gems that will likely be pretty cheap: Darkest Dungeon, The Long Dark, Prison Architect, Don't Starve, Kenshi, Rimworld, Overgrowth or Antichamber. Some are a bit older (as in, not released this year) however easy to miss, loved them to death!
Wow I forgot about TABS, will keep an eye on it, thanks!
@Thasdirty23 It should start on the 22nd or 23rd. Most games on Steam will have some sort of discount, basically. This wasn't so great last year since the discounts weren't as big as we were used to, however we should see how thing are this year. It will be still awesome for you, sounds like you have to catch up on a lot of gems of the past.