Do you buy fundraiser items?

Every kid I know seems to have a fundraiser packet right now. Usually the items are very poor quality, or very small quantities, for very high prices.

Do you ever buy them?
Does it depend what they are? What items are you more likely to buy?
Does it depend if it is your child (or grandchild) selling them, or will you purchase them from other peoples’ children? Or kids that go door to door? They aren’t allowed to do that around here, anymore, but I’m not sure if that is true everywhere.
Do you buy Girl Scout cookies?