Let me provide the information to you concerning the cost of printing dollar bills in USA,....

as at last year 

$1 and $2 cost 4.9 cent for every note printed

$5 cost 10.9 cent for every note printed

$10 cost 10.3 cent for every note that was printed

$20 and $50 charges cost 10.5 cent for each note printed

$100 charges cost 12.3 cent for every note that was printed....

so here you have the information which you seek for...from this figures you can obviously see that the 

more the currency note is worth the higher the printing cost...