Id say the outsides on a first clean, assuming theres no need to start scraping stickers and the like off, £150.
Insides, they need to be more clear about theyre asking you to do before you can offer up anything.
As for weekly, even the sales area is likely to be a tough one to secure, possibly fortnightly; but an area of glass that size at the front is going to demand a fair wedge of money, in these times Id be highly surprised to see them forking out for that weekly.
Fair play to you if they do, be sure you invoice regularly and it gets settled before the outstanding becomes unmanageable.