Thats not how patterns work lmao. Everyone can list their pattern at any price they want. Its about finding the right person to sell/trade it to.
You clearly know nothing about cs skins.
If you have five-seven blue gem u think u can quick sell it?
The one that was selling for $300 on csm was a USER LISTING. Meaning user wants to sell it at this much, u think that makes it worth $300?
Only if u find a person who willing to buy it at this much