Whatever path is taken, the total project cost has to be amortized over few products.
Additionally, the watch company has to buy stock to hold as spares for future replacements. There is a cost to carry inventory. So, how many spares should ALS have for one watch? 2? 6?
Risk? When ALS gets an aventurine dial watch to service, they burden the risk of damaging the dial during dis-assembly, cleaning and assembly.
In the end, the consumer has to pay the price to play. After all, Richemont is a "for profit" business. -John