How much is a Glock 81 knife?

A Glock 81 field knife usually sells for about $30 to $50 in the US. Most standard black or gray models land near the low-$40 range, and sale pricing can dip below that. The Glock 81 is the sawback version of the Glock field knife, so it often costs a little more than the Glock 78. Price changes with color, retailer, sheath package, and stock levels. Military surplus or used knives can cost less, while collectible versions can cost more. It is a budget fixed blade, not a premium custom knife, so the market price stays relatively low compared with most survival knives.