If i buy Mutual Funds today at 11 AM when the stock market is still trading will i get the funds on their current price or yesterdays price?

If i buy Mutual unds today at 11 AM when the stock market is still trading will i get the funds on their current price or yesterdays price? How much will they charge for buying open ended mutual funds? will there be any price i have to pay while selling them as well? ANSWER TO THE ABOVE QUESTION Normally we are asked to pay the price as on the previous day only . If however the variation is high mutual fund may communicate thro internet to its branches to implement the change.