Durango Gravel gravel rock products business plan strategy and implementation summary. Don't bother with copy and paste. Get this complete sample business plan as a free text document. ... Crusher Fines – for Asphalt: $10.50 : $11.25 : $12.00 : 3/4 in. ABC – for Asphalt: $5.50 : $5.75 : $6.00 : 1/2 in. Screened Rock – for Asphalt: $8.00