We have a membership on Amazon so mostly often we never pay shipping.
I had bought hatching eggs on ebay been quite a few years ago.
I had seen a few old hatching cabinets.
I am a small time retired veterinary with 25 maybe 30 birds.
Bought them on Amazon 12 is the little one holds 9 eggs.
Bigger is 24 egg actually takes about 20.
Works for me quite well I just sat on my open distilled water. :th