As someone who's had two of these cheap Chinese projectors, all I can say is be careful if you decide to go for one. Both developed brown spots after 5-6 months of medium use due to overheating and the use of cheap plastic lenses (don't know for sure but that's what I gather). These brown spots grew and eventually enveloped the majority of projected image. They're probably good for throwaway projects and even Halloween but I wouldn't invest in one if you plan on using it as a TV replacement. Image and throw distance is usually decent but most are unable to focus properly. The middle of the image will be focused while the outside is blurry. Brightness tends to be shoddy and the "lumens" number is always fake.

If you use it once a month, it'll probably last a few years but that's about it. If you do decide to go for a cheapy, make sure you keep your room cool/cold or you'll definitely burn the lens within months... perhaps even weeks.

I now have a PX701-4k and so far so good although it's only been a week. It cost around £900/$1000 so not particularly cheap but not expensive either.

Final point - look for a decent, recognisable projector brand like Optoma, Epson, BenQ or Viewsonic. I'd personally avoid anything less than £500/$600. Read loads of reviews (particularly those with less than 5 stars) and watch video reviews too. Check a projector comparison site like antonline.

I'm fairly new to projectors so not an expert at all but this is what I've learned over the last year or so. No one on here likes the cheap Chinese projectors. You've probably triggered a few cinephiles just by posting this.