What are the benefits of watching films on a projector?
projectors cost a lot more for what you get versus tv's. 720p projectors are relatively affordable but 1080p are going to cost you. 4K consumer projectors are insanely expensive right now.
Also you have to worry about the brightness and the lifespan of a lamp. You can't just leave a projector on all day because the lamp will die after a month or less.
I definitely would not get pic related because pocket projectors are pretty shit technology at the moment. They're not nearly bright enough and are mostly meant for doing powerpoints. I would get a 2000 lumen projector for a normal sized room.
benefits? Bigger screen
Bigger display, that's it. The negatives outweigh the single positive. It won't look as good as a similarly priced TV, the on-board audio (if it has any at all) will be terrible and if it doesn't have wireless connectivity hooking external audio up can be a pain due to placement of the projector relative to the sound cables. You also need a very dark room to get maximum picture quality. They also consume more power than your average TV. Once the novelty of the huge viewing area wears off you will miss the clear crispness of an actual screen.
It was a gift from my mom because my roomate didn't buy a tv (like he was supposed to do) when I moved into our appartment I don't remember the exact price but it was something like $150 dollars, she bought it for her work but realized she didn't used it as much as she wanted so she let me unlock it's potential... also I had to get the lamp replaced about a year after she gave it to me because I of the heavy use but the lamp was like 30 dollars (fucking expensive original parts m8)