4 Greenwich Olympic Parking permits ?

I have Four Visitor Parking permits for the Greenwich area which are valid from the 27th of july to the 9th of september time 8:30-7pm they are reusable every day throughout this period. I am situated in the greenwich area and these permits are for collection only and i will only accept cash. All four are for sale at £350.00 or individually £100.00 each.