I'm a local, and I refuse to park there now. There is no need for it, it's blatant money grabbing from people who are already trying to make money go further. I might have used the car park to pop into the Post Office, or pop over the road to get cash out, and then used the opportunity to go into a local shop or two, but I won't be doing this any more. Not only that, I never have change to pay for parking either. Such a hassle, it's easier not to.
The trouble is, with the local Asda, new Aldi just up the road, Morrisons, Ecclesfield, even the Costcutter up the road - there are enough alternatives with free parking to make it just too much hassle to be bothered.