If you have enough privacy to be able to launder them without worry you should invest in a couple of cloth diapers, even if you are not a fan of them it just means you will always have something you can wear when your disposable supply runs out and cant afford more.
This was originally part of the reason I wanted to start using cloth over a decade ago but never had the privacy to, cost wasn't a major issue for buying disposables more the problem of having them delivered without anyone at home seeing but there were times where cash ran low.
Now that I do have the freedom to launder cloth diapers I am happy knowing I will never find myself out of stock and without the choice to wear.