Load balancing is a feature that is available on all plans except the trial. It is automatically setup and configured for you once you pick two or three locations for your cachoid. You can double check its status by checking the number of returned IPs from your cachoid CNAME (xyz.oomph.cachoid.com). Load balancing doesn’t cost extra. It is already included in the cost of the cachoid locations you selected to run.
For example, if you picked plan M, which costs $15/mo, the total cost for load balancing two cachoids from the same plan is $30/mo.