Nothing you said is in that article. Maybe you should read it instead of looking at the photos and fantasizing.
Sounds to me like you are getting your information from anime or some other fantasy source.
"to export a sword from japan requires a special license or permit because it is taken as seriously as exporting a gun and is thus considered a weapon."
No, it doesn't say that anywhere in the article!
To own a sword in Japan or to import a sword INTO Japan it must have a torokusho (License).
To export the sword it must be submitted to the authorities where it is documented, license revoked and released for export.
If the sword is ever returned to Japan for any reason it must be relicensed.
"The second reason is for a lot of ancient tradition that most authentic Japanese made swords by culture and custom will never leave japan, for the belief that the sword is a sacred thing and should not be exported outside japan".
Where does it say that in the article? The only swords not allowed to leave Japan are National treasures.
"The last reason and the most obvious is even if you are able to find a forge master who has his permits in order to ship blades internationally out of Japan and is comfortable culturally to do this, it will be a hefty sum which is usually up into the thousands."
Again, not in your reference article! Modern Japanese sword smiths are like starving artist's, they are happy to sell their swords. It is their only source of income.
Additionally, they are only allowed by the government to make and sell a limited number of blades per month with the exception of kogatana.
"Now this is not to say that there are not real Japanese swords and knives outside of Japan, they can just be hard to find and very pricey."
This is the closest thing to truth you have said, and it is still incorrect. Nihonto or Japanese swords are not difficult to find or purchase, but they can be pricey.
As I stated previously, the only thing you got right is "They can be pricey".
I am not even going to go into the buried with their swords BS.
Wanna by a Japanese sword here is just one example of where you can buy one:
http://yakiba.com/