In my experience, BM pre- and first production runs don't add much (well, anything, really) to the value of the knife. So I would be surprised if, say, a first production Kuglera sold for any more than a regular production Kuglera.
That said, I do think there are a few exceptions to this. Any model where the knife actually changed from pre- or first production to regular production (none come to mind at the moment, though I'm pretty sure there've been a couple) would be worth more. Also, I think there might be a very slight increase in value for pre-/first productions of BM's really long-running or classic knives (i.e., 710, Griptilian, AFCK).
As for the "1 of ---" markings, it depends. The vast majority of BM's markings actually label the individual number of the knife (e.g., "705 of 1000" instead of "1 of 1000"). However, and I don't think this has been the case for about seven or eight years, but some runs were indeed generically marked "1 of 1000". I'm pretty sure this happened with the early 140's, 145's, maybe the Ascents and a few other models as well.