its because KC doesn't limit their preorders. here's a hypothetical situation to help me explain. Say Spyderco makes a sprint run of para 2 with titanium handles and m4 blade steel. say it is limited to 600 pieces...a common number. Well KC will have their preorder purchase button going for everyone despite them maybe only getting around 120 blades... that means for the 1500 people that preordered, only 120 of them actually got a knife. everyone else now has to scout the secondary markets, or be bummed that they missed out on this blade...
other knife companies make you call them to preorder, or they will wait for the availability of preordering until the know how many knives they will get. They don't want to have to contact their customers and say "I know you thought you were going to get this knife, but you're not...sorry"
it happened with me and a sweet CTS-XHP manix deal...it was beat. happened again with the S90V para 2 that came out. I ended up scouting bf and tracking down a guy who lead me somewhere i could grab one......now the only availability is through secondary...for around 280 bills.
That's what he means. If it's production, you will get one eventually, but in regards to sprints, I don't find them to be very reliable.