It's not that hard to find anime or manga if they have been licensed in North America.
I usually buy my anime from Amazon and I went and searched for Sailor Moon for you...
Sailor Moon S - The Complete Uncut TV Set
Sailor Moon - Season One - Complete and Uncut (Japanese Language Edition)
Sailor Moon Super S - The Complete Uncut TV Set
I'm not sure how much more Sailor Moon there is, but there plenty of website where you can get anime and manga from.
You can also go on the website of the company that licensed them, they usually sell them.