Though I cannot state a price for an autopilot in a Z 701, I did oversee the installation of a two axis coupled autopilot on a friend's C 182 a few years back. The cost exceeded US$30,000. Thereafter, there is more costly maintenance to assure it's correct operation. And, you're carrying around a few pounds of extra equipment the who life of the plane. Though, in theory, any airplane could be equipped with an autopilot, I would not assume good function of an autopilot in an aircraft as light as a Z 701, the rates of the controllers might not be adequate for and aircraft that light and agile.
Ironically, most of my long past hard IFR flying was hand flown, as those aircraft (Aztecs) were not autopilot equipped back in the day. Since then, with more autopilot availability, I rarely use them, I enjoy the flying!
People at the beginning stages of piloting are better to focus on learning the basics well, and perhaps then getting an instrument rating with a few hundred hours of experience as a pilot. Thereafter, consider autopilots.....