I've had one year or breeding corns, and discounting the fact that the eggs all produced defective corns, here are my results:
1st time breeder female (normal het motley, amel, anery): 10 eggs first clutch... all lived to hatching, all ended up euthanized. Second clutch 1 slug, 1 egg that never developed veins even though it looked perfect in every other way, and three viable eggs.... one died near-full term, one was dead in the egg at hatching, and the third was euthanized.
1st time breeder female, very small to breed, anery stripe: 6 eggs and 6 slugs. One egg died early on, 5 went full term, 2 hatched, three were dead in the egg, all kinked, one is still with me only slightly kinked and with a huge appetite.
Proven breeder reverse okeetee: She laid 21 eggs exactly 39 days after being introduced to my male. I didn't even know she was gravid. In fact I was holding her when she laid her first egg! She laid 21 total, no slugs, never ate and died on the day they started to hatch.

1 ruptured in the first weeks of incubation, 2 ruptured a week before they were due to hatch, one I saved by putting a bandaide over the leaky spot. Of the 19 I saved 4 (the rest were euthanized) and only two of those are still with me.