CBC article I recall hearing a few years ago on that subject: http://www.cbc.ca/news/business/cricket-farmer-says-crop-cou...

The ratio that they give is 2:1 for feed to "meat" (hogs need 5:1, cows are 10-15:1) and for water consumption its 1/10th of traditional meats.

Glancing at the prices on Amazon for cricket flour however, its still _way_ above other protein sources in terms of cost.