Ask HN: A paper magazine wants my app for its companion DVD. Should I accept?

I have a Windows application that I am selling from my website using PayPal and a home-made protection/activation system. I have been contacted by an IT paper magazine that wants to make an editorial of my app and put it on the companion DVD. The app will also be available for download on their website for two months. I sell the app around $10 a copy on my website, and they offer around $500 of license fee for me giving them the right to put it on their DVD and website. The sells on my website have not been great, so I might take their offer.

Is the license fee of $500 that they are offering an industry standard, or should I negotiate for more money? I know I'm greedy =)

Should I do it?

Thank you HN!