2007, Ayhan Demirbas, Biodiesel: A Realistic Fuel Alternative for Diesel Engines, Springer Science & Business Media, →ISBN, page 197:
Biodiesel is a technologically feasible alternative to petrodiesel, but nowadays biodiesel costs 1.5 to 3 times more than fossil diesel in developed countries.
2008 May 18, Jim Norman, “Fuel From Plants, Not Oil Wells”, in New York Times[1]:
Biodiesel these days is selling at about the same prices as petrodiesel, or even a little more in many places.