FireDAC has always been part of the ver. Pro. But with the limitations already mentioned here:
Local DB only. Sometimes one could buy access to servers. Price > 600€
no source code
If you don't need the above, you've won.
Otherwise just a 3rd party solution. DevArt is not expensive. But it means reworking everything. It doesn't offer nearly the capabilities that FireDAC has. Of course, it depends on whether you've used them.
Asking 2,500€ for server access to DB with the understanding that we'll get a bunch of, for you and me, useless stuff is not worth commenting on.