En:Does the GPL allow me to sell copies of a program for money?

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Question: Does the GPL allow me to sell copies of a program for money?

Answer:

Yes, the GPL allows you to do so. The right to sell copies of a software is part of the definition of free software. Except for one special situation there's no restriction put upon the requested selling fee.

The exception is the required written offer to deliver the source code together with the binary code you distribute.