If you get to keep the knife afterwards, yes. The knife is worth something, right? If they ship you a knife on loan, and you have to give it back in a reasonab

If you get to keep the knife afterwards, yes. The knife is worth something, right? If they ship you a knife on loan, and you have to give it back in a reasonable period of time, then generally no. Ars Technica, for example, notes when a car manufacturer gives them airfare or accomodations. Obviously they don't get to keep the car, but they still received value.