You can order the item even when the inventory value is negative because this is a preorder. Pelikrypta has a retailer pledge for Frosthaven + extras. Estimated time of delivery first fourth of 2021.
This set of high quality, 100 micron , card sleeves grant "Advantage" against bent cards and oily snack fingers. At an estimated 750 standard sized sleeves and 1100 mini Euro sized sleeves, this set contains enough sleeves to protect your entire Frosthaven game.