Yes, another alternative is embryo adoption. The embryos come from couples who have had viable embryos left over from their IVF treatment and have decided to donate them.
This is an alternative with lower success rates, since the couples who donate them have had to resort to IVF to achieve pregnancy. However, the price is lower and the embryos are always of good quality, otherwise they would not have been accepted for the donation programme.
Suggested for you: Double-donor IVF: Process and Treatment Costs.