Some of your readers have it exactly right: Price Does Matter.

Whether TerraPass is profitable or not is not the point. Why would you pay $11-30 to offset a ton of CO2 when you can do the same for $5.50 per ton through Carbonfund.org. Your donation will support wind energy, efficiency or reforestation, depending on what projects you choose. And it is tax deductible (putting the net price at closer to $4.75 per ton).

Carbonfund is out to demystify the cost and ease of reducing our climate impact. Our goal is not profit (though we have nothing against it)but rather environmental protection. If TerraPass is not profitable at their cost we welcome any offset provider to charge $5.50 per ton and see how it impacts their volume and thus environmental protection, the real goal.

Thank you,
Eric Carlson