Average price in Aug = 0.00354716 BTC/BTCD
BTCD exchange rate =  0.00354716 * 1.5 = 0.00532074 BTC/BTCD

When we take into account the bonuses during ICO, we get:

Oct. 15 -           25% bonus  = 0.00425 BTC/BTCD
Oct. 16-22 -      20% bonus  = 0.00443 BTC/BTCD
Oct. 23-29 -      15% bonus  = 0.00462 BTC/BTCD
Oct. 30-Nov 5 - 10% bonus = 0.00483 BTC/BTCD
Nov 6-12 -         5% bonus   = 0.00506 BTC/BTCD
Nov 13-20 -       0% bonus   = 0.00532 BTC/BTCD



To explain this chart a little. The BTC price here refers to the "max" price you paid for a BTCD coin to get the "max" bonus in relation to BTC investors (25 first day bonus).

You would have to buy under these prices to make sure you are better off swapping than investing with BTC.