Ben Affleck's character wore a $190,000 wristwatch in BvS. This watch:
Now me, personally, I couldn't see myself spending $190K. Unless, I was confident I could turn around and sell it for a profit.
Assuming I couldn't turn around and sell, I would say $500 at most. Apple watches, Seikos and G-Shocks are below that range.
The most I have spent was $23K, borrowed some money from my dad, sold the watch after a month (wore it a grand total of 5 times) for $27K. Paid my dad back and pocketed $4K. :D In case you're wondering it was this watch. (Older model though)