"the next question or comments may even be; I thought or isn't the charts copy-righted?"
Well, yes, NOAA charts are copyrighted material but the reproduction rights belong to the American citizens. There is a questionable area in that no one in authority seems to be willing to comment on whether NON-citizens have any right to use, let alone copy, the materials. The laws seem totally ambiguous about how "the people" are defined when a copyright
belongs to the people.
In the UK, what belongs to the Crown belongs to the Crown. In the US, all federal government
copyrights belong to the citizenry.
Aside from that, Staples is a special problem. They got dragged into court some years ago for illegal copying of sections of college texts. The argument was over what was or wasn't fair use, I don't recall
how it ended but Staples, as a company, got the Fear Of The Lord put into them. If you bring anything into a Staples store, and it is not very obviously your work, you may need to argue with the store manager. There are some things like birth certificates that they won't reproduce because they are "government" documents. Which is illegoical and plain dumb wrong, but there you go, they're scared. What each store will copy depends on the store manager.
On the other hand if you go to a "reprographics" shop that specialies in copying large sheets
for architects and other trades, they usually have no problem with whatever you present. If your local Staples store manager has their act together, they won't have a problem either, unless the material says "COPYRIGHT...REPRODUCTION PROHIBITED" or something similar on it.
From the other side of the coin, some years ago I contacted NOAA when you could first download Bowditch in PDF form, and they only had it available as one chapter per download. The numbnuts at NGA said because their online version had "their copyrighted agency logo" in it, you couldn't distribute it or copy it, because that was their property. Ah, no, the logo is not protected that way, and sticking it onto a public document doesn't change the rights to the document, either. The copyright
laws really are NOT COMPLICATED and the copyright office has done a marvelous job of making them clear, going back to faxback systems and free brochures before they had web sites. Easy enough to check out firsthand.