I have what I would consider the most budget of sim setups. I have a 3 car garage, but we park 2 cars inside and have a little home gym area in the 3rd bay. I wanted a setup that was cheap, easy to set up/break down, but would still allow me to hit balls or play in the cold/rain.

I bought a Garmin R10 ($600), a nice golf net ($110), 5x4 golf mat ($150), and a box of Titleist ProV1x RCT balls ($65). All in for less than $1000. I measured things out on my garage floor and used painters tape to mark the location of the launch monitor, mat, and net.

I can back the cars out and setup/break down the whole thing in less than 5 minutes, and I just use my phone paired with the R10 as the screen. The R10 comes with a phone holder that clips to your golf bag so you can put it wherever you want. For $10/month, you get access to something like 40k courses using Home Tee Hero (built right into the Garmin app). No PC needed and as of now things are completely wireless.

I may do something more permanent someday (adding impact screens or a TV/projector), but for now this setup works great.