By that logic the watch is a non-essential luxury good so you probably should use the $150 you have now in a more productive manner regardless of potential futures.
I am not sure I understand you. It's true, I generally prefer not to preorder as it means I'm essentially offering an interest-free loan to a company.
Sometimes I'll do it anyway for one of two reasons: to lock in a price that may increase later, or to receive an item earlier than I would otherwise, due to excessive demand.
I'm just saying that, at least to my sensibilities, the viewpoint that leads one to be concerned about maximizing the efficiency of 150 bucks over the next 4-5 months seems incompatible with the viewpoint that it would be reasonable to spend $150 on this watch at all.
But I recognize that everyone's a snowflake, so you do you.
