Superb Limited develops and sells off$-$the$-$shelf accounting software packages. The retail price of each package is $$660($GST inclusive$).$ Included with each package sold are 'free' upgrades for a period of $12$ months from the date of sale. These upgrades can be purchased separately for $$77($GST inclusive$).$

At the date of sale, Superb should record revenue of:

Group of answer choices

$$583$

$$660$

$$737$

$$530$