do u have to pay money to use coppermine-gallery?
You can download it for free from the Downloads link above.
From the docs (http://coppermine-gallery.net/demo/cpg14x/docs/index.htm#copyright):
Quote8.4 Copyright and disclaimer
This application is opensource software released under the GPL (http://www.gnu.org/copyleft/gpl.html).
Because the program is licensed free of charge, there is no warranty for the program, to the extent permitted by applicable law. Except when otherwise stated in writing the copyright holders and/or other parties provide the program "as is" without warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. The entire risk as to the quality and performance of the program is with you. Should the program prove defective, you assume the cost of all necessary servicing, repair or correction.
Coppermine Photo Gallery is Copyright © 2002 - 2006 Grégory DEMAR and the Coppermine Dev Team, All Rights Reserved.