I found the reason for this 0 price. Its made by mass scraping script. When you scrap aircrafts that are at market, they stay at market and are offered by broker, but with 0 price. The script needs some changes or not allow him to scrap planes, that are not removed from market.
I scraped some planes in W1075 and they are now for 0 at market offered by Qatar Airways (SLA31).