Feng Jun's encounter with this business dispute was a case where both parties seemed to have a point.
But speaking impartially, Feng Jun was at some fault, since what he desired to buy was the Nine Splendors Qiong Zhi, not its pot.
This was like buying clothes on Earth Realm in the flattering store lighting, only to find they didn't look the same at home.
You couldn't blame the clothing store for not selling you the lighting... You bought clothes!
Similarly, Feng Jun wanted the Nine Splendors Qiong Zhi; he didn't say anything about buying the pot, so naturally, it was fair for the vendor to switch pots. In fact, if the vendor had dumped the Spirit Plant and soil into a plastic bag, he'd still have to accept it.
In this matter, the vendor clearly had tricks up his sleeve, waiting for someone to stumble upon a bargain, then using the opportunity to sell the Spirit Plant at a high price.