I better answer myself...
#1- yes, pay for a couple of sites already.
#2- Yes, if the site has content I want and is reasonably priced, one site I was looking at is wanting far too much (£130pa)).
#3- For myself £15 to £30pa, works out similar to a cheaper magazine I feel.
#4- static ad's are fine, a pop-up or full screen ad every dozen or so pages gets away with it, any more and I would either get my wallet out or leave.
#5- Yes, given a couple of times, most recently £5 for free ware, the payment removed advertising.