Digital BW, The Print

Being relatively new at all this perhaps this question is "old stuff" and "off topic" to many here 
and I'm showing off my ignorance on the subject, but here goes: 

In my web searching for more and more info I have noticed that some inkjet paper/supply 
web sites that offer ICC files charge for these files ($25 or more) while others do not. Is there 
any real difference between files from one place or another. I understand that were these files 
custom made ICC files there would be a reason to charge but nothing is said about that... just 
that they are the ICC file corresponding to a particular type of paper.