Sadly, no, 18650's cost the same for half the capacity. Likely because they're in high demand right now and car manufacturers have hogged up the best of them.

Sadly, no, 18650's cost the same for half the capacity. Likely because they're in high demand right now and car manufacturers have hogged up the best of them. Hence, LiFePO4, heavier, lower voltage, less capacity, but also safer tbh.