Hi Ben,
I would recommend that you consider it. The machines are very well made and will last a long time, but there are some things only a tech can to when servicing it that will get the most lifetime out of it. The $200 seems like a reasonable figure when you consider that the next step up in the lineup is a jump to something like three grand.
Plus if it has some kind of problem, it will get fixed right away and it won't be hanging up your business productivity.
Sounds like it's working out really well for you.
Eric