Well gee, you just missed the boat. The whole of last month I was inundated with e-mails from the suppliers I use with various offers and discounts, but they all seem to have gone quiet now.
However, all is not lost! If you look at the top of this very forum, you will see a forum discount thread for WoWo, 20% no less! They supply well-priced wash mitts and microfibres, etc which I can recommend as I use them myself.