Looking like thats a scam ad. I texted a thorough description of questions; then overnite i got several scam messages from different numbers..
the next day i texted from my work phone what day would they be coming thru next. That night got spam messages on it. i know it came from that ad Then.
It says 100 birds...
If they are actually getting them from a egg farm, they probably get them close to free.
The $500 they get for each 100 is probably mostly profit.