Surfboard EPS Foam for Hot Wire Blank Making - $20 (WESTMINSTER)
2 lb and 1 1/2 lb EPS foam blocks from Insolfoam (beaded styrofoam) for custom sized surfboard blank production. You can net a shortboard blank for $20, (+ labor).
You will need a hot wire set-up to utilize this foam to make surfboard blanks. If you have the equipment, and expertise I have material for over 6 long, and shortboard blanks for a very low price.