Almost every single simulator package is going to require a computer to run its software. Hardware is an added cost that many golfers will not consider. It’s possible you may already have a laptop, tablet, or desktop option that is capable of running the software. Most systems will require a more robust graphics card, which you can easily upgrade on an older computer if you are handy.
Another important factor is lighting, because the indoor brands can burn off their capability to trace your golf club in case of too much brightness. Also, have in mind the opposite; too low of light can make the system even lose track of your club. You’ll need to mess around with using the light to obtain the ideal level. It depends on the model and its sensors how much they can take of brightness or dark.