Yes the stories are true they are hard to hatch and no one will refund you on the ones that die.Understand that seramas are very hard to hatch and die out at 14 days and upon hatch also. It is a risk! .If you get some just try not to pay to much money for them and try to get more then 1 dozen so your odds won't be as bad for you.
Here is some info for you on them:
hi , I keep and have have hatched serama eggs and yes there is a nack to hatching.
They need a lower humidity of 42%, i dont candle as that can be enough to do damage.Also dont stop turning the eggs until they pip and increase humidity when piped.
Loads of info and help on the serama community forum .They have been great and very helpful, thats were i found info when i got started.
Here on EBAY is the lady I was going to order from:
15 Serama Hatching Eggs-From SQ~ Frizzle, Booted & Smooth-NPIP AI #91-150
Hope this helps you Howden!