Back at my computer. Here are two from eBay that illustrate my point.
This one was listed for about $4300 but sold (via Best Offer) for less than that---can't tell what it was. (This is closer to where I personally would value the watch---in the 3,000-3,500 range, but others have certainly paid far more.)
This one listed for about $6500, and the same deal: sold (via Best Offer) for less. There are many others.
And note that more than 80 of the listings for this piece on Chrono24 are "Item Needs to Be Procured" or "Item Available Upon Request" listings---meaning (the way I see it) bogus ads: the sellers don't actually have the watches in stock. Some of these listings are really sneaky, as they include photos of what appear to be in-hand watches. You always have to check the fine print!
All to say, again, I don't think $5800 is too good to be true. It's not out of line, either, but if this is a watch you might want to resell some day, you could be better off waiting for a stronger deal. This watch isn't for everyone---there are hundreds of them sitting on the preowned market right now with no buyers, and many sitting in dealers' cases. It's a great concept: titanium no-date diver. But the faux-patina dial and (some would say corny) James Bond costumey-military engravings are not features that will likely endear the piece to future collectors. Not disrespecting anyone who loves the piece---every niche has its devotees, and that's what makes this hobby awesome. But from a financial point of view... that seems like a
lot of money for a watch like this. IMHO.