Using Primers application rates

[phil]

Whats the going rate for spraying a primer surfacer onto fully finished drywall ...i know its a strange one, but i have just been asked to give a price for spraying just the primer coat on for a dryliner, we usually do the whole decorating contract, but on this one the dryliner is responsible for priming prior to hand over to the decorator. i just didn't know if there is a standard m2 price. its 2000m2 school, walls and ceiling. would also be interested to know what primers people like using???

[cleveland steamer]

i charge a minimum of £1 m2 to supply and fit for drywall primer.thats rollered on though.