This spreadsheet from the
GolfSimulator subreddit is a good resource for comparing options at different budgets.
We have a Bushnell Launch Pro in the office that we're super happy with. The cheaper options felt a little too casual for what we wanted. We use GSPro for the sim software and got the hitting surface + enclosure from
GungHoGolf who are based here in Austin. All in for enclosure / turf / launch monitor that put us around $8k after taxes. You could probably shave off ~$2k or so if you go used/refurb on the launch monitor and then DIY the enclosure. You can save some more money by sourcing the launch monitor from somewhere like
Puetz Golf who doesn't charge sales tax to Texas.
Definitely do not skimp on the hitting surface. A cheap mat can lead to some pretty nasty tendonitis. However you can save some money here by going cheaper on the turf then cutting out an area where you'll be hitting off of where you can just drop in a nicer hitting strip that you can pull up and replace once it starts to show wear.