The biggest consideration I find is finding a store that can get the capsules in relatively cheaply I think, as you don't want to run out of gas and not have a capsule to swap in.
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It's not a bad price, but most of the time the extra $10 for shipping really drags the value proposition down. Ideally, you want to know a store you can visit nearby, or relatively so, where you can pickup in person, to avoid the shipping charges.
It's not a bad price, but most of the time the extra $10 for shipping really drags the value proposition down.