Sharp sand (Norcot RG30)

Hi all, I would like to ask if anyone have some leftovers of sharp sand PLEASE?? I need it to put under paving slabs I would really appreciate any amount as it'll help lot. The guy who'll build shed said that it'll need about half a tone of sharp sand for underneath the shed.. but as I said I'll really appreciate any help, many thanks Salma 🍀