I bought my copy I just got recently(after selling my two Special Editions I got from Blockbuster for $32 each for $35 and $40)from Blockbuster for $18 total after doing a $1.99 rental and then immediately paying off the $14.99(plus tax) used price.
They gave me the artwork, case, manual and even the map for the copy too.
But the thing is, do YOU think you got a good deal on it? If you do, then that's all that matters.