They are being set. They vary from project to project and from funder to funder. Charitable foundations tend to require lower rates if they're successful—5% per annum to maybe 13%. The private sector funders—and in the U.S. you get several of these, and in Europe some of the more recent funders are private—the expectation is that they will be looking at much higher rates. The range of 20 to 30 is mentioned, but I have no direct evidence of that size of payment.
On March 26th, 2015. See this statement in context.