Note that Bitcoin markets are currently unlike regular markets. Prices are increasing more than exponentially. You could spend a day figuring out how to get a fair price while that fair price increases 50 percent. I bought my coins for myself and my father a week ago at bitonic.nl, who are now sold out all of the time. I would go for any coins you can grab at the mentioned exchanges, and seriously consider the offers done above.
Wise words. I made the same mistake to some degree. Missed out on a lot of potential profit :@