Sebi,

Did you see this announcement from TCGPlayer:

http://store.tcgplayer.com/help/buyoutresponse

It looks like they are trying to be more open to others using the pricing data from TCGPlayer. I would love to see a move back to TCG pricing if it is possible. I think that their market pricing looks like a great idea.

0% chance (ok, maybe 0.01%) of this happening. TCG's "partners" are sites like MTGGoldfish and MTGStocks that don't make money by selling cards, which would be direct competition for TCG. The whole reason that TCG removed Deckbox's access to their pricing API is because of the Deckbox Marketplace, which made Deckbox a direct competitor.