Hi Nick, it's not an 'expense' item... any cost of paper may or may not have it.
Paper has been like this for 15-20 years now... (No I'm not that old... er... my older brother told me about it... yeah, that's it... )
The thing is finding the arrow (if it even has one), on some brands it's stupidly small and many people will miss it or not be able to see it for what it is... Think 4mm X 4mm bright yellow indistinct blob/arrow on bright blue packing and not perfect sight.....
And just because it's got an arrow... don't think it can be trusted to be pointing in the right direction... many a time I have had to say to customers "Yeah, I know the arrow is pointing that way but if we put the paper in upsidedown there's less curl look!!!"
As for the copier/laser point, as far as I know, nobody manufactures non-digital (analogue) copiers anymore. Copiers have been laser/LED printers with a built in scanner for some years now.
Whatever you do make sure the packet says copier/laser paper on it. Don't use anything for inkjet/bubblejet etc machines. I've seen some pretty horrible messes in copiers, quite often destroying the fusing rollers, particularly the stuff used to create image to transfer onto t-shirts.
If you use paper that's designed to curl, the wrong way... and it's sufficiently damp, the paper can come out and roll itself into a tube of about 25mm diameter
Needless to say it doesn't then doubleside very well
Common conversations I've had over the years:
"It's your paper causing the problem."
"You said that last time
"And this time, as last time, when we put fresh paper from a fresh pack in the problem goes."
"Whys that then
"Because this time, as last time, the papers damp."
"You always blame it on the paper
"Yes, and when we change the paper, the problem goes doesn't it!!!"
"What's wrong with the copier then
"The last three engineers have blamed it on the paper
"Does the problem go when you put fresh paper in?"
"Yes..... but the problem comes back after a couple of days
Now that everyone has fallen asleep... I'll sign off