That is a Code 3 model, which means its not an official Trax model, but one that a person has modified to be a Peter Brock support vehicle. The original Trax TR12B is a HZ Holden panel van in red with Ampol livery.
Trax TR12B Holden HZ panelvan in Ampol livery. Released in 1993
I'm not familiar with the Code 3 model in question, but in my experience Code 3 models vary in quality from amateurish to exceptional. My advice is to actually hold it in your hand and assess the quality with the naked eye before handing over your money. Even I have been fooled with photos of a code 3 model which looked great - and when the model arrived I then saw how poor it was.