... May I know how much does the map cost?...
US$119.20 from Amazon
...Do you know about map rental for short period?...
Did not check into it as I go often enough to Australia and New Zealand that I wanted my own. I've also purchased Garmin maps for Western Europe and India albeit the one for India was from a Garmin partner MapMyIndia whose maps were more detailed than Garmins own for India. I make four trips to India a year and a similar number of trips to Western Europe and hence the reason to have my own.