Evening all,, I have looked at a job which involves me cleaning and sanding around 600 sq/m of block paving and 250 sq/m of tarmac. I will be using my gx390 21l with hopefully a surface cleaner if I can get it to work, would normally price block paving at £3 sq/m then tarmac at £2.5 when ive work this all out the price seems too high, how do I price up for such a large area its in a private estate. Thanks paolo