Question..machine for cleaning large car park

[Welshyyyyy]

Hi, just wondering if anyone knows roughly how much to hire a machine to clean a large car park, it's too big to brush or use a leaf blower and there's lots of loose chippings and the landlord wants me to her a machine to hoover up everything. I've found a couple of places that rent them but they won't give a price unless you sign up for a trade account which is really annoying as the customer wants a quote, I even spoke to their customer services rep on the phone and they wouldn't give me a price as I don't have a trade account and I don't really want to sign up for essentially a one off hire so I was wondering if anyone roughly knows how much they are, for a day or weekend. I'm guessing a couple of hundred , the ones they have are the karcher battery powered machines
Thanks