Why does the presale price on Bter keep edging up?
15% early bird bonus declining to 0% over 2 weeks. After that it wont change
But why is declining now, before the sale begins? The price has been edging up already.
the BTC price would only go up
the BTCD or NXT price could go down if the prices for them go up faster than the decay of the early bird bonus. The price is the moving average of the last 24 hours, so if you are having this data and do some probabilistic moving average predictions (this is possible because we know all the past data points and you can just use a stochastic model for near future price points and use this to replace the oldest values and thus make a reasonably accurate near term projection of the moving average) and optimize the purchase.
Then again maybe it is too much trouble to do unless you already have such signal processing algos implemented
James