I thought exactly what you are thinking, "$7 Foundation, it sounds too good to be true". Then I tried it.
I heard about "the abnormal beauty company" Deciem, in a video from one of my favorite beauty vloggers Fleur De Force. It peaked my interested because they have a number of brands and a number of products that "cut the fat" (so to speak) and boil the product down to just the active ingredients needed to get the job done. Unfortunately, that also makes some of the products tough to navigate since you need to know exactly what sort of ingredients will work for your specific skin care needs/issues. At the time, I was interested but too lazy to do the research needed to see what I might want to try out.
Recently another beauty vlogger (Jamie Paige) reviewed The Ordinary's Coverage Foundation. She raved about it! Soooo I bought it.
I bought two colors (because I never know what color foundation I am..) 1.0NS Very Fair- Neutral with Silver Highlights and 1.1N Fair Neutral. The foundation is a thinner consistency (recommends shaking before use) but a little bit goes a relatively long way when applying. I've tried brush, beauty blender, and fingers for application and I have to say, applying it with my fingers (which I almost never do) is actually my favorite way to apply this foundation.
The initial application is lovely. I'm very happy with the color and coverage, other products blend super well on top of it, and my initial finished foundation look looks great! Unfortunately, for me, this foundation doesn't have the staying power I need. It's been breaking up on and around my nose pretty quickly, and really doesn't look great when that starts to happen.
Overall, I'm going to keep playing with it. There may be other products I can use underneath or overtop that will prevent the issues I'm seeing but there are definitely other foundations out that that I would recommend over this one. In fact, I wrote a post all about them- check it out here.
Let me know if y'all have tried this or anything else from The Ordinary/Deciem and what your experience has been!