If the woman can afford to get IVF, then I doubt she is poor.
You are mistaken about IVF in the situation we are discussing on this thread. And anonymous sperm donor's contribution is quite low-tech. Lesbians often find a willing male friend to make the contribution. The technology involved is a turkey baster, and to be quite gross about it, both women of the 'couple' participate in insertion of said implement.
IVF is for hetero couples who are having problems getting their own egg and sperm together in the natural way.