As another poster noted, unfermented beans can be found online at sunfood dot com

Sunfood removes the surrounding fruit at harvesting before fermentation can occur and claim "low to no fermentation" and are otherwise natural and unprocessed so should work for sprouting (I am going to try myself soon).

Cacao is not only extremely sensitive to factors like humidity and can be grown only in tropic areas, but is a shade grown plant and requires planting under a tree canopy--good cacao is grown exclusively in the rainforest. The mono-sunfarms that produce cacoa (largely in western Africa) due so at several various reduced factors--including extremely shortened life span of the tree (10 years or less--making this option significantly economically costlier long-term, despite possible higher short-term profits; not a viable business model), loss of natural pesticide management (hence significant increase in pesticides--both a business and environmental expense with consumption consequences that include decreased consumer demand with the growing health demand of many of the world's consumers) and, decreased nutritional value. I would be interested in hearing plans for and results from your effort. Good luck with everything.