I bought 18650 sodium-ion batteries last year. Price is about the same as lithium-ion in small quantities, capacity is about half. But this is currently small

I bought 18650 sodium-ion batteries last year. Price is about the same as lithium-ion in small quantities, capacity is about half. But this is currently small batches backyard production, so I expect the prices to go down. Also, the materials are available practically everywhere, so even 3rd world countries should be able to make them.