When floating price is enabled, your transaction price will fluctuate according to the market average rate (Coinmarketcap, Bitstamp, Bitfinex) and the premium % set in the sell/buy ads.
This is to ensure that the price is always competitive. You do not have to update the price when the market fluctuates.
Market average rate = SGD 13,000
- If you set premium be 3%, Sell (buy) price = 13,000 * (1+0.03) = SGD 13,390
- If you set premium be 5%, Sell (buy) price = 13,000 * (1+0.05) = SGD 13,650
Sell (buy) price = Market rate * (1+ premium %)