Archer as nobody has responded i will try.....
Firstly you really do need to fill in your profile, otherwise you will get very little assistance and as for pricing etc, this forum has got some very useful posts dating back a couple of years with lots of information, try going back through the posts and you'll probably find your answers there.
By the way the clean you describe is a builders clean and it's not just a case of wash and wipe.
hope that little bit helps
wayne