I am getting rates of $87 for priority shipping from the Atlantic region. Id say that $100 is roughly the actual price of shipping if the store is further out west.
Priority Worldwide - $87.76 - 3 business days
Xpresspost International - $58.21 - 5 business days
International Parcel - Surface - $35.77 - 4 to 6 weeks
What is the part you are trying to get?