Vinh Thai – The Conversation

Consumer group Choice found some chocolate treats, like these Easter eggs, have become smaller and more expensive since last year. Liz Minchin/The Conversation

March 30, 2026

Why does chocolate cost so much this Easter, when cocoa’s price is at a 3‑year low?

Vinh Thai, RMIT University

Cocoa’s price hit an all-time high in 2024, but has plummeted since. Why aren’t we seeing cheaper chocolates on our supermarket shelves yet?

Studio Romantic/Shutterstock

February 6, 2024

Finding a reasonably priced new car is almost impossible. And the second hand market is not much better

Vinh Thai, RMIT University

Several years on from the pandemic, the demand for new cars still outstrips supply. But turning to the second hand market is not the solution.

shutterstock.

August 22, 2022

Conflict in the South China Sea threatens 90% of Australia’s fuel imports: study

Richard Oloruntoba, Curtin University; Booi Kam, RMIT University; Hong-Oanh Nguyen, University of Tasmania; Matthew Warren, RMIT University; Prem Chhetri, RMIT University, and Vinh Thai, RMIT University

Our analysis is the first commissioned by the Department of Defence on the specific threat of prolonged maritime supply-chain disruptions due to conflict in the South China and East China seas.

Contact Vinh for