Amazon sells them in 10 packs: https://www.amazon.com/Dice-Boxes-10-Pack-Polyhedral-Miniatures/dp/B08MFRL3F4/ref=sr_1_1?dchild=1&keywords=B08MFRL3F4&qid=1624809616&s=toys-and-games&sr=1-1

They had like 3 or 4 different brands when I looked (including ones from Chessex themselves) so you should have no problem finding them there.