Yes, there is always one offer for new members and one for existing members...One other question:
Is there also different pricing on active resort sales? Or is that just for the limited availability (AKA older) resorts?
Now, most resorts have a minimum for any incentives to come in, and some resorts may have no offer, but all resorts with offers further incentivize existing owners to buy more points and offer a nicer price per point to them than the new owners.