Doc C said:
DIY! Home Depots are still open. Youtube is your friend.
I've done about 6 of them, couple of my houses, sister in law, mother in law.
It is a lot easier than you think, the usual issue is older connections that you may need to reuse from the plumbing coming out of the wall. Most of the time, it is as worst a 2-3 hour job and maybe one return trip. Just be careful transporting home.
Is it already up to code with a stand and pan? If not, you need to either get it that way if you are going to sell in the future or kick the can down the road. I may or may not have done mine as is and didn't have it up to code.