Offers a large selection of brands like EVERMARK , with wood spindles starting around $5–$12 and iron balusters typically $6–$28 .

2. Specialty Stair Suppliers (Best for Quality & Customization) Stair Balusters, Spindles & Shoes - Stair Warehouse

Best for bulk packs of metal spindles (e.g., 10-piece or 50-piece sets), often ranging from $49 to $190+ depending on quantity.