Contact cajon builders directly to find cajons made in Chile. Unfortunately most big online retailers and many music stores only carry imported brands. Buying a locally made cajon cyles your income back through your local economy. Below are links to the 6 cajon makers in Chile:
Minimize the carbon footprint of your cajon purchase - buy direct from the cajon builder. Most imported cajons are shipped around the planet in big cargo ships. A locally made cajon helps your local economy and demonstrates that you are thinking about and support local artisans.
Cajon DLM is in Valparaiso; Cajon Peruano Moncada is in Santiago; Cajones Volcan Percusion are located in Villarrica; Flamentr3lok is located in Santiago; Rainier Cajones Peruanos are also in Santiago; Suonare Percusion is in Curicó; Tukutupa is located in Pichilemu
Listed above are links to the cajon drum builders in Chile as retrieved by Internet searches in March 2018. I am sure there are many others not listed. Please send me updates and correction if you have additional information. Thanks.