I have dozens of WordPress multisite sites that need migrating from the multisite to their own domain.
This is a simple export and import, but everything needs to be identical, so if you have done this before, you know that sometimes it may not be that simple.
You will be provided the logins to the new site location and the necessary files and you go to work. If you have done this before, you know that you can't just change the DNS until the site is done. If you are serious about this, you know there is a trick that needs to be done to compare the current site against the new site to make sure it's totally done.
This should be a small job and not require a lot of fuss on your part. You should know what's involved, get to work and get good feedback from me. If you do well, I have dozens of other sites as well, so don't bid too high.