This is your Association at work, responding directly to the need they've heard about from religious educators (and certain bloggers). Melanie Davis, the OWL Program Associate writes, "The decision to host the training is due in part to requests made by religious educators who find trainings in other areas cost prohibitive, as well as to requests to combine OWL training and GA to help lower travel expenses."
The cost is still $250 for the training itself, but the ability to combine the trip with GA for those already traveling to GA cuts down the costs of training substantially, avoiding a second air fare or mileage, plus having the ability for some to share hotel rooms with folks going to Columbus early for other pre-GA events, such as Ministry Days or the LREDA Professional Day.
It should be clarified that all ages training does not mean that attendees will be trained in all ages, but that each of the training levels is being offered at the same time. So if your church needs one more person trained in Junior and Senior High, and one more person trained in Elementary OWL, you can send them at the same time and they can share the drive and the hotel room, as long as neither snores or both do.