Yeo (1946) presented an account of the relative costs of land and sea transport drawing on the ancient sources, primarily Cato’s De Agricultura (22.3) and Diocletian’s Price Edict. From these sources he attempted to establish the actual costs of transport for imperial Italy. His analysis was detailed and made frequent reference to other costs in Italy by way of comparison. However, at times he misses the significance of some of the evidence and certainly decontextualises it to create a standard cost for the transportation of items in relation to cost at the point of purchase. There would also seem to be a number of errors in his calculations that cause the transport costs to escalate. Therefore, at this point, it is worth reviewing the figures again.