Not too long ago CEX was trading at 0.08 and it just went downhill in the last couple of weeks.
I was lucky to get out at 0.06 while the BTC created using their GHS vs the BTC lost due to decrease in price was still at a good ROI ratio.

The question is how long will it stay at 0.04 and if it will be enough time to make some BTC?

I'm going back into cex but with a very short trigger, because new and bigger mining gear should be delivered in Late JAN, therefore prices per GHS should drop significantly again in the immediate future. Then again, it might not.