Amazon has capsules and a plastic case to hold the capsules (not air-tite brand). 168 capsules with foam insert for $28. Works out to $.17 per capsule. Link below.

https://smile.amazon.com/gp/product/B08LZCS53K/ref=ox_sc_act_title_1?smid=AC7DSGEMFLWVB&psc=1

Good luck!

Alan