Based on the standard service packages, if one make a value judgement and do price comparison with outside workshops, as well as charges by other car distributors such as Borneo, Kah Motors, Komoco, C&C, etc, one will realise that TCM's pricing cannot really be called expensive. I will say that their pricing is fair and in fact, cheaper than agents such as Komoco (my previous ride was a Hyundai) and Kah Motors.
My experience with TCM is so far very positive, compared with past experience with other makes' agents, I will rate TCM quite highly in terms of service quality. As the previous poster mentioned, best till warranty expire then visit outside workshop.
However, if you really want to save substantially, you have got to visit those cheap sole proprietorship workshops but up to you to decide if that is the best choice for your car.