Some deals have shared costs, others don't. Ask actual trainers and owners who do deals, and you'll get their answer. There is no one size fits all deal. I know plenty of excellent trainers, and incompetent, gypsy trainers who have done deals. Several have have asked me for advice. Here's the obvious, but interesting part. The trainer and the owner each takes the deal.....because each thinks it's a good deal FOR THEM. Like many times in business, someone is going to be right, and someone is going to be wrong. LOL.