If you could make a pretty good color copy on reasonably sturdy paper that will hold up to wear and tear for say $12 a chart it would be well worth considering. If it's B&W and/or inferior paper, the value would go down considerably. I had some B&W chart copies in the Pacific in the 80s and while somewhat useful, I'm glad I didn't have to use them as the primary chart. You lose a lot with B&W.