Placebo - with all due respect the effort to mine a coin does not set the price so none of this is predictive of the future price:

"About KDC, when you check that you can only mine 100KDC per 1000Kh/s per day and my rule (before the bear market was) 1000kh/s = $8 then it means that 100KDC = $8 or lets say 100KDC = 0.01BTC (to make it easy) so 1KDC = 0.00010000 and now we are trading at 0.00004800 so a little discount of 50%."


It could take $5 worth of effort to mine (n) number of coins in a day and if the highest bidder only was willing to pay $1 for all that effort that is the price.  
On the supply side few people will be willing to sell for less then the cost of work, or the fair market value for that work against other coins. Out of this two sided behavior a market is born.

In a sense all the reward reduction did was reduce the sustainable network hash rate of the coin, it will not increase the supply of bidders or the amount they are willing to pay.  Just asking for a higher price will not generate a trade and the market will dry up as the spread widens.