Replacing clips on driver side window for auto operation.

What is your question?

My window slammed down and I tried to roll it backup but could not. I have been told by 2 mechanics that my clips have broken and my door panel will need to be removed and the clips replaced. My question is... can I buy clips at an auto zone or advanced auto or should I buy them from a VW dealer for better quality clips? Approx how much should clips cost? I have a friend who will replace the clips if I buy them. Thanks