the charity shop where my daughter is assistant manager takes electrical goods and they're pat tested before they're put on to the shop floor.
if you think a price is rather more than you want to pay you are welcome to ask if they'll accept a bit less than the tag price. you probably would have got the food mixer at the price you wanted to pay.
yes, charity shops are a business now and why not? they do a good job in raising money for their respective organisations.
i, for one, was surprised to learn how things are run in charity shops these days - they don't just put things on the shop floor but take things off if they haven't been sold in a certain time and replace them with fresh donations.
all clothes are clean and in good condition, all books, cds and bric a brac are also "whole" and in a good condition and electrical goods are, as i said, pat tested, complete and in working order.
your food mixer would have been a good bargain even at the price they were asking, nonnie1, and it would have worked when you got it home.