It would be interesting though. If you sell a GPLed application for €0,90 or €2 in the store - would anyone find it worth the hassle to get hold of the sources, compile them, upload them to extras? keep them up to date as the original application evolves?

Also it would be even more interesting to see how the Ovi Store compares to Extras in attracting end users. Having the same application on both platforms, which one will consumers download from?

I'd try just that. It's the ideal setting. This guy already got more money for his work than he'll probably ever earn from selling it in the Ovi Store. If anyone can afford to try and sell GPLed software, it's him.