Final pricing of products is determined by the vendor. We provide feedback on the pricing during the review process, but in the end it’s the vendors choice what to sell a product for.
And while I cannot say for certain one way or the other whether the Blender Market will ever be integrated into Blender, I can say with almost certainty that it won’t ever be done officially. The Blender Market is a private operation and so it’s not appropriate for it to be implemented officially. However, there’s nothing preventing it from being integrated through an add-on.
Each time I go looking for the Blender Market (can’t remember the name for some reason) I end up coming to Blender Artists and scanning messages to find my way there. Blender Cookie doesn’t have an easy-to-find (not for me, any way) link.
I’d bookmark it, but that’s a whole other can of worms. (sigh)
I may be the only person with this problem, but just in case I’m not, perhaps you guys would consider putting a prominent (or not) link on the Blender Cookie main page and maybe a sticky somewhere on Blender Artists.