Wow, that seems pricey! I would definitely look into switching. I am not that familiar with AdvancedMD. I've looked at it, and I know it had lots of bells and whistles. Any transition is not easy, but if you prepare the best you can, it can be done fairly smoothly. I would check with the software you are switching to, and see if they offer data conversion. If not, try your tech guy.
Good luck!
Michele