" but 15 mil for DJ Korr? Do you have any idea how long you have to play to afford that?"
About 20 years, daily 8 hours playing DM and winning all the games. You can count this stuff if you want, I did.
The question is - "What is playing UR really?" - after you realize you cannot get Dj Korr by just playing DM realistically - you either rageguit - or you stay calm, focused and make a strategy to get into your goal. After that you have three different routes:
1) Take ELO
/ DT seriously
2) Playing the market like a BOSS.
3) Attending to events that has Korr for main prize.
All these routes are part of Urban Rivals Game experience. If you want those Big 5 you have to dig deeper into the game and face people who are as good as you are - or even better. There is no-one or anything stopping you from trying and your efforts will eventually pay off if you play out right.
Lets take example from the other famous game - World of Warcraft. How many percent of all the players of Lich King addon did participate in original 25man Lich King Raids when it was top of the world? - That is less than 1% of players. That is "Extented game content" intented for hardcore players that are minority. Later those raids got nerfs, but still they are extremely hard to do. Well, same goes to UR - Getting CR's is the extented game content and since these days you can get CR's from DT... thats pretty much your nerf.
Casual players should aim for 100% normal cards collection. That is very doable.