There are a lot of online stores that sell fabric that looks like grain sacks, but ebay store has real grain sacks that you can use to make upholstery.
Good grain sacks cost $50. Larger sacks—especially those used to form body or long lumbar pillows—can fetch more. They can cost extra if embroidered with a family name or emblem.
Grain sack textiles vary in size. Mix & combine stripes and embroidery from different fabrics. Diverse design components provide aesthetic appeal to the room.