I have had other problems with shipping from other companies. Sometimes it is because I live in Colorado and while I ordered the item to be shipped to Texas. They flipped out and said oh no, you can't have that in Colorado...but it is going to Texas....and it is ok there.
I did have to sign a letter indicating that no, the 30 round magazines were not for re-importation to Colorado. At that point I just stopped buying those sort of gifts. I just give them money and a link so they can buy it themselves.
Also, a good company I love to do business with has said...no more to Colorado unless you are not in a city. Seems like the city, county, and state taxes was just too much of a pain to deal with. The rule was, if you live in the County, you only pay state tax. If you live in the city you pay state, county, and city.