Anchor cost depends on the size and quality of the anchor. Larger anchors cost more than smaller ones, but size isn’t all that affects the cost. Boat anchors vary in build and materials. A more expensive anchor may have tougher construction to last longer. Boat anchors take a lot of abuse, so an anchor with corrosion-resistant materials and heavy-duty components will cost more. Part of boating is losing an anchor. Despite best efforts, broken lines and weakened components will lead to replacing an anchor, so keep that in mind when shopping.