If you watch the guineas carefully, you may be able to spot where the females are nesting. A male often stands guard, and guinea fowl will share their nests. As with chickens, they usually lay a clutch of eggs and then go broody, but if eggs are collected regularly the birds will keep on laying. However, make sure there are no guineas around when you take the eggs and leave a few pot eggs in their place, or the guinea fowl will quickly find a new (and probably even more inaccessible spot) to nest.
It is NOT ok to contact this poster with commercial interests.
1) Do NOT send money for shipping the pet from abroad, they are scams.
2) Beware the seller or buyer who is from overseas.
3) Avoid bank wire service and western union because they has no buyer protection.
4) The safety way is to deal locally with people you can meet in person.
5) More about How to Avoid SCAMs.