If the house has been on the market for 2 weeks, you do not have to eliminated inspections. That window has passed. If there are still multiple offers, your parents may lose to a no-inspection offer, but after 2 weeks, the need for waiving contingencies is passed. Waiving contingencies is what you put when you are trying to beat other competing offers. Those offers generally come in the first week. If it makes it to 2 weeks, there is going to be less active competition.