A game is meant to be fun, not a job. Yes, work often means doing the same repetitive task for hours in real life, but that doesn't mean I want to do that type of work in a game.
One hour of racing in a custom race is about 60k. Since there aren't many pre-made races to do in the first place, custom races are the main source of variety. Note that going over an hour in a custom race actually rapidly decreases the ratio of how much money you earn vs how much time you race. A 24 hour race will not earn more than double what would be earned in a 1 hour race. And 200 laps of the Nordschleife is not even 1,000 Cr more than 150 laps.
So with that out of the way, ideally you'll only do races up to an hour, since anything more is a waste. 60k/hr is already very low and you don't really want to go lower. A 600k car is a 10 hour grind, now. A 6M car, 100 hours. There aren't many cars sold for 60k or less. Most cars will take hours of driving, each.
The current estimated total cost of all of the cars in the game is over 250M. From custom races, it would take over 4,000 hours to be able to afford them all.
Somebody who does custom races 12 hours a day for 2 years would finally be able to buy them all.
Or more realistically, an average of 1 hour per day. Some days more races, some days none. It would take 11 years.
And this is with an incomplete estimate, with many legend cars missing. It could total over 300M. Add a few more years.
ETA: This isn't difficulty. A grind isn't a challenge, of anything but your patience. Nobody is upset that the game is
difficult. It isn't. We're upset that the game is
unreasonably grindy.
Oh, and here's a fun fact. at $20 for 2,000,000 Cr, it would cost $2,500 to buy all of the cars through MTX. Of course, 250M is actually the rounded down number, and the count isn't complete yet anyway, so realistically it's far more than $2,500.
Source for the total price is here:
Credit to @Famine for the base car list. ---------------------------------- Current Stats (Last Updated December 15th, 2022) All figures are based on the US/Europe credits. Credits in the Japanese version of the game are vastly different. Prices of Used Cars can vary depending on their...
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