What do you think about donating your sperm/eggs or being a surrogate for others to have children?

Have you done it? Would you do it? Who would you do it for? Would you do it for the right price?

I know that a few same-sex female couples asked my partner for sperm and it’s something we’d consider doing. I don’t know if I’d give my eggs, as the process has side effects ( a couple of my friends have done it) but I might consider being a surrogate for someone.