Best price for Tasco OffShore 10x42 Porro is $227.99 inclusive of GST. This is presently the cheapest offer found from comparing prices from 2 shops in New Zealand.
General
Prism/Mirror binoculars
Prism Binoculars
Image quality
Lens diametre
The larger the diameter, the more light is captured. A diameter of 30 mm suffices during day-light conditions, but larger lenses are required during low-light conditions.