Ordering rootbark would really be a waste of time. Of course you could steam distill the oil, but ultimately it would be cheaper to buy sassafras oil. This product is used in some aromatherapy products and is sold as an essential oil.
If you are just curious about rootbark, then depending on where you live you may very well be able to find it yourself in the wild. I always regarded the rootbark as more of a novelty, it's fun to chew on, but I don't see how it would be economical to rely upon this as a source.
Also, before you post your questions on the forum, you may want to consider consulting:
https://www.the-hive.ws/forum/searchx.pl?Cat= (https://www.the-hive.ws/forum/searchx.pl?Cat=)
You will find that quite often you can find the answers yourself much faster than by asking questions in the forum.
Flip
Conclusion /nm./: the place where you got tired of thinking.