plasterboard meterage price

Are you talking 'dot and dab' or fixing board to existing stud or building partitions (from timber or metal stud?). Is it single-skin, double-skin (or even triple skin?). Single sided? Double sided?

What kind of plasterboard? Fire resistant board? Damp resistant board? Acoustic board?

Is there heat/moisture/acoustic insulation required?

Would pattresses be required behind the boards to fix various electrical and plumbing fixtures to?

As you can see, you may as well have asked "How long is a piece of string?":-)