If your are looking for cheap backer rod go to a Home Depo or an Eagle hardware. These two stores carry the same type and color of backer rod in stock. I think is is a 30' - 50' roll in one package. I think is sells for about $4.50 per package. The two colors that they carry are light grey and charcole colors. Hope this will help. You really don't have to travel far if this will satisfy you. See ya!