I give it to my clients for free, use it for mulching up shrub beds on my housing estates work. I don't think there's any real value on it unless you were delivering it to their garden and putting it down for them
We normally give it away but charge for delivery if its out of our way.
Generally we tip at allotments and stables for free
I used to charge £45 pm3 for composted hardwood chippings including loose delivery, tend to buy in a better grade now as it lasts longer. I used to get the chippings from a tree surgeon for free, turn with a mini digger after a few months and after 6 months its good to go.
I can get composted woodchip mulch from a local nursery for £15+VAT per cubic metre loose.
Thanks for all the replies, seeing I get the mulch for free I decided to just charge for the labour time to fill the back of the van and some for delivery and fuel.