Comments:
Do you know the value of your collection?
I recently watched a video of a collector who could cite the purchase price of every piece he presented as well as the current market value. I have to admit, I know what I paid but I honestly have no idea of the current market value. I suppose I could easily determine it but I have never had the interest. I am sure for insurance purposes, high end collectors have to know the value but my attachment is more emotional than monetary.
Actually yes and easy to do so.... just open an account at CH24 and add details of your watches. Market value will automativcally update.
I think some sites offer this option…
where you list the pieces you have and it provides their market price. It’s not a service as opposed to just a functionality on the site like I’ve seen on Chrono24.
I have a rough idea, but I don't check too often since I have no plans of selling anything
With the exception of my out-of-catalog Pateks, I assume that a rough estimate wouldn't be too hard to determine by looking at past auctions, secondary dealer sites, etc....even if, likewise, I don't really have an interest in doing so! :-)
The most important thing for me though is, I badly hope I'll never receive too HIGH of an offer for my 'Boccadasse' (people with homes/castles in that neighborhood of course periodically show interest)....since no matter how crazy an offer is, that will NEVER get sold for as long as I'm around! ;-))
In general, a collector who's always current on the market value of their watches sounds more like an investor than a real collector to me....to each their own, but that'd definitely spoil much of the beauty of this hobby for me, so it's not gonna happen! 
Cheers.
Yes
Amusingly enough, I was just thinking about it a few minutes ago while in the basement doing laundry. The thought was, "Here I am, an apparently perfectly normal and reasonable human being, doing chores on a Saturday at home. And yet I am somehow also the owner of a $XXXX watch collection."
Exactly!
I was about to say this has lessened since I got a new car... but then I realized my 'new' Volkswagen is coming on 5 years old. Not so new after all!
A site I visit from time to time
Watchrecon
This gives some indication of market value and what watches have recently sold for. Yes, I have a rough estimate for what my very humble collection is worth
