How much is it to install a cat flap on balcony glass door?

M requested 3 quotes from Glaziers in Melbourne

Would like to install a plastic cat flap. Can a hole be cut out of existing balcony glass sliding door?

Install cat door
install a Cat Mate Elite Super Selective Chip and Disc Cat Flap into the...

Cat door installed
Transcat polycarbonate cat door to be installed into glass door

Install a cat door
Need to cut a whole in a glass panel to install a cat door

Would like mirrors for home dance studio
I would like mirror/s for home dance studio, nee to be at least 2m height and...