STEEL BUILDING SALE…â€REALLY BIG SALE IS BACK - Extra Winter Discount on Now!" 20X21 $5,929. 25X25 $6,498. 28X31 $7,995. 32X33 $9,994. 35X33 12,224. One End Wall included. Pioneer Steel 1-855-212-7036 www.pioneersteel.ca.