The vast majority of funds price each working day at noon. When you place a deal it will be traded at the next available valuation point, typically noon the next working day.  This means that you will not know the exact price that you will buy or sell at when you place the deal.
You can however view the latest fund price on the portal.  The price will always have a 'prices as at' date stamp to show when the price is from. Fund prices are updated overnight and will display the last available price.