[ben M]

£250

[Richard S]

You will need  600+ litres of water minimum and will take you more than 5 hours to do properly on a first clean.

I would estimate a single person to be able to get this done with a dinner break mate.
Not for the faint hearted to tackle by themselves without a few breaks.

I would think you could charge more than a basic day as you need to consider your pole costs and water and wear.

£300 up easy.