Patches, samples, loops etc., supplied with Reason (including Sound Pack patches) are royalty free and can freely be used in the context of non-commercial and commercial musical work.
However, according to the EULA, you cannot re-sell patches, loops, and samples included in Reason as patches, loops, and samples. Neither are you permitted to claim as your own work any part of the demo songs/examples included in Reason and in Sound Packs.