Do you still buy from the local Christian bookstores or from online or just download it from the internet?
DOwnload might be stealing infringe of copy right Christians cant do this as the ten commandments are still valid. We need to follow the commandments.
Buy from bookshop better
'Thou shalt not steal'
But some online resources can be available with thanksgiving from the authors
Some examples are online tracts and others
www.febc.edu.sg
http://www.biblestudytools.com/ (with full concordance and notes for all version of bible)