Best red dot under $75 - SightMark Sure Shot Plus Reflex Red Dot Sight

Don't waste your time with generic $30 red dots from Amazon or Ebay. This is the real deal, and it's a great price for the quality and features. It's unfortunate that this sight might have been discontinued as of February 2022, options are now limited for a good basic red dot under $100. I'd suggest get them while they're in stock if you're looking for a no-nonsense American company with good background and history in sights, and avoid the generic chinese stuff from amazon sellers.