The key to understanding the level of monetary use is to reconstruct the quality of the division of labour and the accumulation of competence. The question of the degree of monetarisation of local markets appears to be of central importance. What significance did the markets play? Who generated the demand for goods and services that went beyond the usual compulsory fiscal levies and labour duties? Where and when were coins used? Finally, can the spread of the market and an economic logic of action be understood as a linear process? In order to answer these questions, a set of indicators needs to be developed, combining the written sources with the numismatic and archaeological material.