Auction house why cant i sell my cars for 20 mil when others can ??

Ive been tryin to sell cars make some money i see lambo adventadors forza editions up for 20 mil and i can only sell mine for about 700k why what am i doing wrong???

To be able to set 20m cr prizes need to be either legendary tuner or painter. That it status that you get by reaching compined 50k downloads/uses/likes.