Purchased the asphalt material. Great stuff and easy to work with. One covered an area of about 6″ x 8″, so if you are in doubt on coverage, get an extra bag.
I have bought multiple bags of multiple colors in multiple sizes. I love the choices, particularly with the help of the sample bags. It’s real rock which doesn’t float when glued down. The subtlety of different colors gives me the choice of getting the color I want. There are even different coal sizes. The service is decent and the supply seems to be generally available. I buy this stuff only from them.
Best ballast on the market. Real rock that does not float away when you apply wet water and glue. Realistic colors.