I, The Strongest Merchant, Starts with Buying the Treasure of Dragons

Transmigrated to an isekai, Ranch becomes a downtrodden noble expelled by his house.
But somehow, he activated the Traveling Merchant System.
Buying high, selling low, he profits immensely.
With sufficient gold coins in hand, he continually grows stronger, acquiring various treasures.
The formidable dragon god bloodline allows him to shatter mountains with a single punch;
Mystical magical potions become the envy of many;
The noble elven queen, setting aside her royal dignity, willingly follows Ranch...
It all starts with the acquisition of the dragon's treasure.
[You purchase the Rock Manor Ruins for ten thousand gold coins. Upon evaluation, it's discovered that a treasure of the dragon, worth a million gold coins, is buried beneath the ruins. Your decision is incredibly astute, your wealth increasing a hundredfold!]
[Reward acquired…]