Below is my recent response to an email from a game company that was looking for review of their curriculum material. The company apparently sent the email to game faculty to solicit input on the material without considering paying for faculty expertise in this area. Once the company confirmed that there was no honorarium or pay of any form involved, I was asked to pass along the request to other faculty members.
It’s important to understand faculty workloads are very heavy and faculty pay is typically very low. To receive the quality review that you seek, honorariums or other methods of honoring the work faculty perform for projects/materials such as this is completely in-line with acceptable etiquette/protocols. You/your materials will benefit much more from a quality review and thereby potentially be more effective in teaching students and, thus, be more widely used.
I only seek to raise awareness about the use of faculty volunteering/donating their time for private, for-profit enterprises. Hope these thoughts help, even in some small measure.
P.S. I am the only faculty member in my department who teaches production courses where a curriculum like this may be beneficial. But, in principle, I could not see myself forwarding a request like this. Personally, when it comes to volunteering, I much prefer doing work in local, urban schools among underprivileged populations.
At some point, these requests just become insulting.