For the moment, from rough internet pricing, it's 10x the cost. (20 cents rather than 2 cents), but given the scale, I imagine the price could go down? Of course, going green requires an investment, but helping save the planet is worth the 18 cents more ?
Hi. Still modifying & examining techniques (for example, for the lip thermo-protector as enameling makes recycling more difficult). In contact with a couple a manufacturer for the bamboo plug lid! Thanks for asking!