User blog comment:BonesMcGee/Brainstorm: Potential savings in using the hurry hatch trick/@comment-5355974-20120927031657/@comment-5200570-20120928031713

I've never actually had this happen myself, I was just assuming if the egg didn't register that the 250 coins did not register either and therefore were not deducted.

So if it is happening where the coins are deducted and the egg is lost it will have to be determined what constitutes an attempt. Is it when the 250 coins are deducted? or when a rare dino is found or the egg is tossed?

Personally I feel it's the later simply because it's much easier to track. I don't keep track of my coins very closely so I would never notice 250 missing.