The NPS gift shop at the Castillo de San Marcos in Saint Augustine Florida had these on sale for eight bucks each. They looked perfect for Age of Sail land fortifications so I bought four. Unfortunately they don't appear on the list of items available on the park website so you will have to go there in person to get them (or offer me absurd sums of money for mine). I also saw them at the Fountain of Youth, but they don't list it on their website gift shop either. Or you can wait until next spring when I'm heading back that way and place an order with me and I will be happy to pick them up when I visit.