i personally feel one should cast their own spells because you can add more energy to it, you know your desired outcome better, you know the person, so on. myself, unless it's a friend of mine, i don't cast spells because i don't know the person and if i'm told 'i'm jack and i want jill to love me cast a spell' but jacks profile picture is of a wolf, and i don't know what jill looks like, or where they live, or anything like that [which i don't want to know] how am i suppose to conjure up energy and direct it towards two people?
if someone was to cast, while i'd like to believe it would be out of the goodness of their own heart, they should pick a price that wouldn't be ridiculous. even if they work, charging 300$ for a spell that would cost, maybe 20$ i feel would bring bad karma and no spell caster wants a dark cloud looming over them. people should keep their eyes open when looking, but when the person is so emotional over something, they don't realize, and i never do get why some people can be that heartless.