The economics of this era were defined by a sort of Pseudo-Capitalism, relying on trade. This was most clearly shown in Carthage, were free markets dominated the economy, but were forced to bend to the will of the king. Most other economies operated the same way, like Etrusca, or Safineim. Meanwhile, the Keltoic states operated in a slightly different way. While local economies went unregulated, trade was generally under the control of Monarchs or people appointed by them. This lead to good economies across Europe, with open trade routes, among other economic benefits. This model would later be changed, but for the era, it worked extremely well, and would have arguably work better than its various replacements.
The main driver of these economies would be trade. For the most part, nations that controlled trade became rich, while others were left by the wayside. This lead to several wars - notably the Macedonian War and the Safinei war - and defined any economic or trade policies. It was also the main reason that Carthage was so powerful and influential, while nations like Safineim and to a lesser extent Etrusca, slowly whittled away. Ultimately, this reliance on trade would give riches to some nations and poverty to others, but would be unable to hold up under future political climates.