STEEL BUILDINGS for Sale: Installed Prices - No Credit Check. (All Buildings include Garage Door) 12X21X8 - $2,495 - $108 monthly/$375 dwn. pymnt. 20X21X8 - $3,115 - $134mo./$468 dwn. pymnt. 30X31X8 - $7,455 - $316mo./ $1,193 dwn. pymnt. Affordable Portable Call (432) 307-8888 Veronica or (575) 420-1274 Office.