If you would buy a large amount of bitcoins or some is by the way also possible, you should localbitcoins give a try they have some nice dealers with some good reviews in most countries nowadays.
I always suggest buying bitcoins in smaller units through systematic investment plan. If you want to buy 10 bitcoins then buying all 10 bitcoins in one shot might not work well in terms of price volatility thus buying 1 bitcoin daily or weekly would give the best result as the cost will be the average cost of that period so you might get the good price. Some bitcoins will be purchased at a higher price but some bitcoins will be purchased at a lower price and hence you will get an average price at the end.