normally i would supply materials with the exception of any decorative wallpaper. emulsion, gloss, ucoat and lining paper etc all in the price.
Like i say and has been said all depends on the amount of prep needed, could be a lot if its all woodchip that needs removed.
2.5k is a lot of money for decorating, too much imho if the wallpaper is easily removed and the woodwork just needs undercoat and gloss.
Hope this helps!
sean