I think they said cartons actually(nit picking). So I guess the plastic containers with 10 filters are cartons in their eyes. The next PR actually did state 196,000 filters though.
The filters are packed in plastic boxes with 10 filters/box. However, to sell filters, they need to put these small plastic boxes to carton boxes. 4 plastic boxes per carton box; so 1 carton box = 40 filters: https://store-54586.mybigcommerce.com/products/American-Blend-Nanobead-Filters.html. Now, they have filters but run out of carton boxes. We need to wait for a few days more, I believe before this weekend, to have all options available on the website.