Anyone who thinks that blizzard actually will sell 15$ for just 10k must be dreaming lol. Seriously 10k? What is 10k? Thats nothing, who wants to pay 15 bucks for just 10k and on the other side who needs to pay money for subscription since everyone should have 10k. That model wouldnt work at all for blizzard.
I think the price will be high. Like 70-100k for a 19.99 token, anything else wouldnt make sense. The only question i ask myself if ever this is true, what will happen to the normal gold market. Ppl who dont farm alot and dont buy token wouldnt be able to buy pets, enchants, boes anymore cause of too much gold circling around due to tokens = 100k each.