Let me say my 2 cents about design choices regarding AH and token prices, although I find some of the implementations a bit lackluster.
Point to note:
IMC, like other MMO game companies, want to vastly reduce the amount of gold(silver) farmers as they affect more than just lag, economy and reputation of the game.
Why retrieving gold from AH takes 48 hours.
I was wondering why at first too, then it dawned upon me. For those who are fans of ARPGs/ItemHunting genre will remember the game Auction House 3 (oh sorry Diablo 3 vanilla). It was a game that is built solely for the thrill of fighting mobs and getting leet lootz.
The AH of D3v was a treasure trove for another group of players, auctioneers. With zero delays in buying and selling items, players can buy in items are low prices and flip them at much higher prices. These made prices of items increase tremendously overall. You will be surprised at how many flippers there will be when the 48hr retrieval rule is lifted.
With the 48 hour rule in place, it stops these auctioneers from affecting the market prices too much by making them “park their cash resources” in AH and halting their cash flow.
Without the delay in silver retrieval you will soon see prices of crafting materials increase, just like how many of the other AHs in other games are. Which inevitably will lead to the demise of the game, like how D3 shut down AH in the expansion release as it was too detrimental to the game.
Token pricing at base 500k
If you look at it from an economic point of view, this helps reduces the amount of bots in the game. The main purpose of bot is to farm silver and sell to players.
What IMC is saying is, $18 real life $$$ is worth around 400+k silver (after AH deduction). It sends a signal to the goldfarming companies that in order for them to earn $1, they need to farm at least 20k worth of silver in ToS. With so many goldfarms, competition is harsh and with this extra baseline in check, it will be increasingly difficult for the goldfarms to sustain their business model. Hence in the long run it leads to lesser goldfarms willing to make ToS their $ making game and is beneficial to the ToS in game economy.