Need to borrow a roof box

Im in need of a roof box for a weekend in June Friday the 4th till Monday the 7th.

If my words not good enough I can leave a deposit incase anything should happen to it etc.

Ive found one including roof rails which is £140 I dont have that laying around at the moment and its doubtful I'd ever use again.
I can get the roof racks/rails for about £40 but like I said i'll probably never use the box agin so dont want to buy one.


Thanks in advance.