He bought many of the knives with his own money, especially early in his testing. Some knives were donated by mfrs, as was the FFBM, I believe. Other blades were donated by individuals who wanted to see how they compared in his tests. I donated one (the Basic 9), went halves with him on the cost of one (skinny ASH-1), and sold him another knife at my cost that he was interested in. I don't know whether he took monetary donations to help defray his expenses or not, but I do know several other blades tested later in his series were donated.