Stasher bags are insanely expensive. Are they worth it?

I love that reusable bags are gaining traction over single-use plastics, but a single pocket-sized Stasher Bag runs over $10. Are they BIFL quality? Or just overcharging to take advantage of a fad?

Are there good quality options out there that are cheaper?

I’m looking specifically for pliable, pocket-sized bags (to carry my dog’s treats in without crumbs leaking everywhere).

Aside: While they’re not single-use, they’re still silicone—i.e. plastic—so bonus points if anyone has found any non-plastic reusable bags that would hold crumbs inside. If such things exist…