You cant make an embryo live to day 5 in a petri dish. I know - i would have 14 eggs and end up with one embryo or 2 at most by day 3 or 5. You cant make an embyo implant in the womb or make it live past 13 weeks if it does implant. It is Still in gods hands. It all is.

As for saturation, i dont have the answer but i bet it is more rare with eggs than sperm. Not all eggs will make it to viability and not all will take in the womb or live to a live birth. The rate of donation is lower. Most women dont repeat donate as it is a long protocol with drugs and procedures. It is more expensive to obtain.

sperm can impregnante an army though.

You cant make an embryo take in the womb. Srill in gods hands. It all is.