I had experience of flying with JetClass from London to Brussels when they had promo flights on the route. One seat costed 290eur and no penny more. My colleagues from Zurich office are also flying with them, and the guys are quite exited that now the service is launching new routes from Zurich. I flew once with a friend with JetSmarter membership (15K per year!) and can say that the service and experience at JetClass is exacly the same, why then overpay those membership fees?