Dan107,
I hear you..
If you can believe it.. there were Some knives that were even Worse!
yes the Dumpster Mutt sold out in ~4 hours..

But, the 2nd Offer of Street Scrapper 4 sold out in LESS than 5 Minutes!!
Some of the first Busse Game Wardens sold out in Seconds!!

So yes.. some of the more "limited" knives are Very Crazy!

However.. having said that.. Other knives such as Scrapper 6 lasted for Months, so did the HRLMs.
Dog Father lasted ~3-1/2 days.
SwampRat Mini-Mojos are In Stock right Now! these have been what? over a month now?
And there are several Busses In-Stock right now as well.. BATAC, AK, FBM..

so the 'regular production' type knives tend to be In-Stock much longer.