And a 4th here- no need to go snobby- but charity shops should be clean and well-organised and the clothes and other stuff for sale in clean and in excellent condition. And yes, they are there to make money for the charities, not for us to get incredible bargains- totally agree there needs to be a balance too.
Now (and I know it annoys some, so apologies, lol)- here is the point of view of a furiner (who very much loves England). I'll always remember the first jumble sale I attended, with my landlady, at a school in Brentford. I just could not believe my eyes- there were 2 tables of worn underwear! (1970)
Later, when we moved to Staffs, I experienced my first 'Bring and buy' coffee morning. And again, I was hugely surprised, shocked even. My contribution was a jar of Nestlé Gold coffee- can't remember the exact figures, but let's say it was £2.75 and the host put if for sale at 1.50. She had become a good friend and neighbour so I asked why so cheap. Oh, she said, you've already paid for it, and it's for charity isn't it? And I replied 'yes, exactly'- next time I'll just give you the money, better for the charity. Her contribution was a magnificent and intricate baby matinée jacket- it had taken weeks to produce as it was such a complicated pattern, and the wool had cost her (again from top of head) say, £9.00. So she put it for sale for 3.50 and it was of course snapped up quickly. Again, I asked her why she hadn't at least asked for the cost of the wool- and again, she found my question strange! Why did you not save yourself hours and days of work and just put £9.00 in the kitty. Just not cricket, was the reply.
Very lucky in Market Harborough to have several good quality charity shops and one which we both find impossible to resist, a charity book shop.