>>1226994You can absolutely refill the canisters.
A canister refill adapter costs about ten bucks. There are several kinds you can buy off Amazon for different gas sources. The cheapest one is pic related, and passes gas har har between those $1.50 butane cans and the isogas canister. Using straight butane is only a problem in winter, and you can work around it by carrying the canister in your jacket.