Don't know if you've tried Green Mountain, but that price sounds about right.
Remember, taken proper care of, this carafe will last you a lifetime, give you the ability to keep your own coffee on you at all times, and piping hot, and because of that, keep you from having to buy coffee when you're outside.
Since you'll be roasting the coffee yourself, and that also makes the coffee you drink cheaper, even a large investment on a carafe now, will keep you drinking cheaper coffee for a lifetime. It adds to the chain you create by roasting, hand grinding, and brewing your own, because you get to either enjoy it at home long after you've made it, and don't have the time to make more, or carry it around and enjoy hot, fresh, home roasted, hand ground (no electricity) coffee whenever and wherever you want.