Prices depend on the origin and quality of wood, workmanship, and reputation of the maker. Kaya table boards composed of joined pieces (setsugou-ban, 接合盤) are also available at lower prices. Kaya table boards (6 cm height, or 2 sun) start at about USD600. Prices for a kaya go board with attached legs (12-18 cm height, 4-6 sun) range from as little as USD $2,000 for itame/omote, up to USD $100,000 or more (masame) such boards weigh 14-20kg, with masame 1-2kg heavier than itame. The red line indicates the surface of the board. Depending on the cut, could be shihou-masa, tenchi-masa (straight grain on both top and bottom), or ten-masa (straight grain on top only). B is masame, requiring uniform texture and grain. In this graphic, A is shihou-masa, the top grade of masame, requiring a tree at least 1.2m in diameter. How each is cut from the tree is shown here: "Omote" boards have the center of the tree lying toward the bottom of the board (the grain of the side surface facing the players forming the top half of a semi-circle), with more noticeable grain on the surface and defects on the bottom. In other words, the grain of the side surfaces facing the players forms the bottom half of a semi-circle. "Ura" boards are superior, with the center of the tree lying towards the top of the board, with no defects.
Itame is further categorized into "ura" (back) and "omote" (front). Kaya boards are classified into two types: the preferred masame, with straight grain across the top of the board, and the inferior itame, with irregular or bent grain. long-term value, due to the small number of kaya trees available for harvesting.its texture, neither too hard nor too soft, bouncing back from the tiny indentations left by stones played.its extreme durability kaya boards last for hundreds of years.the pleasing sound stones make when played on it.its fine grain, due to its extremely slow growth.the beautiful sheen it acquires with use.Kaya is preferred as a material for go boards because of: Kaya (榧) is the type of wood from which the best go boards (as well as shogi boards) are made.
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