About 20 pieces were sold on opening night, with at least five sold more since then.
Mr Murupaenga had been renting the space as his studio since February but had been thinking about putting on a group art exhibition for a while.
Between himself and Mr Harding, another local artist, they came up with a list of artists and things just happened "organically" from there, Mr Murupaenga said.
Half of the artists whose work was displayed had connections to NorthTec. Two were current students, one a NorthTec tutor, the five more were graduates. Mr Murupaenga graduated from NorthTec with a Diploma in Applied Arts in 1998.-The exhibition will run until Friday, May 22. The gallery is open from 10am-1pm, Monday to Saturday.