Start with the commute, not the marketing. Shortlist gyms within about fifteen minutes of home or work, check their class times against your real week, then book a trial at two of them. Judge the coaching, the room, and how you felt walking out. Sign up after that, not before.
This is a direct answer from the CrossFit BC coaching team. Short version first, then the detail and the local context for training in Vancouver. If you want the same answer applied to your own situation, a coach will walk through it with you in person.
Most coached gyms offer a trial. At CrossFit BC you get three free coached classes, and drop-ins are $30 if you just want a single session.
Aim for under fifteen minutes door to door. Beyond that, attendance drops off sharply once the weather turns or your week gets busy.