I tried just that. Got a dozen farmstand eggs and saw she had RIR's and sex links. She had them in her fridge but said she just picked them that day. I let them get to room temp. and put them on my older LG on 7/10/08 and the results are in: two
pipping started at 2:30am, two chicks zipped with assistance and finally came out at 7:15 tonight.
All of the others were developed but died in shell. I had some wiggly jigglies, but even with some candling and some very minor picking to see what was up inside, they were gone.
Anyways, they are on their bellys snoozing and peeping with their eye closed in the bator. Nice reddish color to them.