Hi everybody, I recently found certificates that were based on indexed like the DJGT or the DAX. They looked pretty straight forward at the beginning but the more and more I look into these things, the more complicated they get. And the worse my results are. The strange thing about these things are the redemption formulas. In most cases, they look like this: ((Average - Strike)/Strike) * Notional. I thought they could be treated as standard asian options where I set the strike equal to one because of: (strike/strike) and the "spot" price to 1.xxxx because of: (average/strike). And then I only use the Levy Formula for example to price these things. But my prices look bad, they often are far from market prices. Is this the right way to price them? And also, what would the input parameters be? For longer periods I would use the swap rates in the appropriate currency and usually the historical 30D volatility as inputs. Please help me, my brain is like going crazy. thanks for every help!Kind regards