Update: The Time Krystal purchases are finally live. 500 Time Krystals costs $4.99, making each skin cost roughly that same price. There are also packs of 1150, 2500, and 5600 Time Krystals for $9.99, $19.99, and $39.999 respectively. And if you didn't pre-order or pick up the Premium Edition of Mortal Kombat 11, Shao Khan will cost you $5.99 and the Kombat Pack season pass will costs $39.99.
Mortal Kombat 11 has one more day before its official release, but it's already in the hands of some players and services are live. Although I dove deep into the game for our review, finding a title with an amazing core experience surrounded by a few problem areas, one thing that wasn't live during my review period was the Premium Shop. NetherRealm has turned the key though, and players can see everything the shop entails.
First up, it's not a place where you can easily buy any skin, fatality, or other kosmetic you have your eye on. Instead, like other recent games, Mortal Kombat 11 takes after Fortnite with a Premium Shop that features items for a limited time. There are slots for a total of five items, with three options for purchasing Easy Fatality tokens.
All of the items costs various amounts of Time Krystals, and additional currency you'll receive for playing the other modes. Currently, the store includes Cetrion and Kotal Kahn skins for 500 Time Krystals each, a Jax fight intro for 750 TK, a Baraka taunt for 200 TK, and a Raiden Kombat Kard icon for 100 TK. Easy Fatality tokens come in packs of 5, 40, and 100 Tokens for 100, 500, and 1,000 Time Krystals respectively. Given my playtime, I have enough to purchase one of the skins, with some left over.
The Premium Shop items look to be on a 24-hour rotation. This means if you had your eye on a specific skin, you either need to unlock it at random in Towers of Time or the Krypt, or check the Premium Shop each day. And given that there are 25 fighters with 60 skins each, that's 1,500 skins that you have to wait for, with two on the Shop at a time. (Assuming those are fixed slots.)
Since I reviewed the PlayStation 4 version, I only have access to the PlayStation Store to check items. The PlayStation Store items are not live yet, so there's no way to see if players can purchase Time Krystals, Koins, or other Mortal Kombat 11 currency with real money yet. There's also no method to purchase Tower Skip or Gear XP Boost tokens at the moment, so those might be on the storefront of your chosen platform.
As it stands, it's hard to gauge the real-world prices per skin, but we can look at the price of Source Crystals, the premium currency for Injustice 2. You can purchase a pack of 2,000 Source Crystals for 99 cents. Shaders, Injustice 2's version of Skins, cost anywhere from 5,000-6,000 Source Crystals, or $2.50-$3.00 in cash. Given the 500 Time Krystal cost for Mortal Kombat 11 skins, that's roughly a tenth of the 5,000 Source Crystal cost of some shaders. So, we might expect a price of $0.99 for 200 Time Krystals, keep MK 11 skins at a price of $2.500 a piece. We'll see once the game is fully live tomorrow.
The developers at NetherRealm Studios are already hard at work tweaking the Towers of Time and Krypt modes, which should alleviate some of the need to purchase kosmetics directly.