My friend's cat has had kittens. I said I was interested in having the girl one but it turns out a family member is having that one, so I have a boy one. My friend had said she was thinking of selling them which is fine. But I thought they would cost around £10-£20, and she has told me she would like £40. I have to pay for the injections, the neutering and the microchipping. I feel cross and have a sneaking suspiscion that the family members probably won't have to pay. What do you think I should do?