Minimum order per fly type or style is 6 and quantities increment by 2. For instance, if you want to buy a Caddis fly, you'll need to buy at least 6. Then, if you want more, clicking the + icon for quantity will add 2 more Caddis flies to your order (8 total). This helps me stay busy trying flies and not filling orders for a single, 60 cent fly. Thank you for your understanding.