That can make a difference between $10 for a parcel, sent airmail, and $30 to $40. And when you want a $20 device, $40 shipping makes it pretty expensive.
That is true for me, The distributors here can't be expected to have each and every item that sparkFun may make and sell.
However Seeedunio people are good in this case just order above $50 USD and get all stuff that you may want.no shipping there.