Rebus has a good calculator on the site, the values it shows it´s pretty close to the final costs.
On this piece, i guess it was something like 400-450Eu, for 720 frames. (More or less), because i had to fix some stuff with region render after it´s done. But it depends on your machine, and i completed the render using our local renderfarm too. (Rendered like 70-100 frames on local machines overnight).