I put a lot of that matting down before I laid my driveway...it is worth every penny. I don't recall the exact price but I got 300 ft by 12ft rolls. THey had "good" and "best." I spent the extra few bucks on "best." I have muck soil (picture peat meets potting soil) over 13 feet deep and often standing water where I had to put a drive in. I have two layers of that "geo-textile" material with heavy broken concrete then normal driveway stone. I have had many trucks including cement trucks with 10 yards over my drive. I shakes but does not settle. I will never put in a drive without this material. I both stabilizes and prevents mixing of the dirt with your valuable stone. I also have seen no weeds...yet.
Peter