I started mining on this pool just a few weeks ago, but, whats the avg earning / day for 200 GH/s for example?(1 antminer S1).

For example, one day i earned around 8 €, another 10€, another maybe 5€... it depends always on the blocks of course... sometimes a block is found with just mins or 1 hour, and sometimes you have to wait 17 hours xDD