A bit more information please,
Do I assume its timber and not metal studs, is it a straight wall, or a number smaller walls, does it have door ways with installation of doors, electrical work, is the job on the ground floor, upper levels or both, easy access or difficult access, are there hour restriction to work, residential / commercial.
The existing floor and ceiling. Ceiling, plaster ceiling and timber framing or concrete, existing floor, timber or concrete.
Purpose of the wall just a partition wall or are you going to planning to put shelfs up and put heavy items on the shelfs which my need 90 mm studs instead of 70mm.
Its not easy to just give a price without knowing a few things, if one knows a bit more one can provide a better estimate.
A simple question answered with a lot of questions
Brian