It’s a great idea: take the beloved Mason jar and turn it into a coffee cup — one sees an entire secondary market in convenient sleeves cropping up — but [Cuppow] is only available through its own website. It’s price of $7.99 is not bad: this is obviously meant to target a particular market which is willing to pay for its green-ness and/or cleverness. (Hey, I’m in that market, so I can write that.) But the shipping of $5 means your total cost is $13. Too much. Get back to me, Cuppow, when you have gotten your costs for one or the other down.