Personally, I think a fair way would be:
►Each person puts in a numbered chit with a list of what he wants. He puts a priority to each one that he wants. There is a time limit on submitting chits of at least a few days. One chit per person.
►Knives get made and shipped.
►Lottery is held. Chit numbers are drawn. For each time a chit number is drawn, one knife on the list on that chit gets fulfilled. Then if there are more knives on the chit, the chit goes back in the hat with a chance of getting drawn again. Each time that chit gets drawn, another knife on the list is fulfilled.
►lottery continues until all knives are assigned.
►Each Person who put in a chit gets contacted.
►Person pays for whatever knives he won. Person gets the knives.
This would reduce occurrences of brascals reserving all the knives then selling on the aftermarket for big bucks. Gives more folks an even chance to get a knife.