Be very careful about graded coins and especially if it is not someone that you have heard about before, I think we have all learned this lesson one way or another. Look at the up side that the others have pointed out, you still received great coins but just closer to the actual price, at least you really did not lose money on the deal. Any day I can walk away with something and be excited about it is a good day and this lesson will help improve your searching skills as well.
My first hard lesson was a Lincoln Wheat folder from 1909-1959 that was 3/4 full and a large variety in grades. I was told about PCGS and figured they were the only site to go to for prices and if that was their value then the folder was a steal for $100. Like others, I quickly learned that PCGS is not a normal price guide and that what I had was no where near what I paid for it. The funny part was that I never got down or upset but used it as a challenge to learn more about grading and collecting so it would never happen again.