Best way to get them without a plane ticket is to make friends on the forums and find someone who is willing to act as a proxy buyer for you. Basically you make arrangements for that person to buy knives on your behalf at the show, either by fronting them some cash up front, or if they trust you enough, paying them for the knives after they give you a total of what they will cost. The individual proxy arrangements are very much a private matter for the two folks involved to work out on their own.