Once you get past the gothic beau peep schoolgirl horror-show that is Harajuku station on Sundays, you'll find many fantastic shops hidden away in the side-streets between Takeshita Dori (the one with three million kids walking down, you can't miss it) and Omotesando (Tokyo's 5th Ave.). You'll find something to buy no matter what your budget.
Nearest station: Harajuku (JR Yamanote Line).
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