How much does printing cost?

Printing Cost as follows:

A4 BW (single) = 10c per page
A4 BW (duplex) = 16c (8c per side)

A4 Colour (single) = 50c per page
A4 Colour (duplex) = 80c (40c per side)

A3 BW (single) = 20c per page
A3 BW (duplex) = 32c (16c per side)

A3 Colour (single) = $1.00 per page
A3 Colour (duplex) = $1.60 (80c per side)