What the figure is built from
Five things. The measured volume, taken with a tape. The access at both ends. How much packing you want. Whether anything is being held. And how much protection the fabric actually requires.
That last one is why two houses of identical size in this district can quote differently, and it is also why we will tell you when your house does not need it. Selling protection to somebody with plasterboard walls and an engineered floor would be the easiest thing on this site to do.
No price, rate card or transit time appears anywhere here, because none is knowable before a survey. Begin on the quote form, or read the questions page.