I have an access to a copy of this book right now if you need a review for it.
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International Relations in the Ancient Near East, 1600-1100 BC by Mario Liverani. Pricy, but my favorite non-primary text reference for the time period. Of specific application to what I think you want is the discussion how the politics of the day influenced nations worldviews and economy, especially with regards to trade.
Economies Beyond Agriculture in the Classical World Edited by David Mattingly and John Salmon. Never used it, but have access to a copy right now and wouldn't mind browsing it for you.
A History of Money: From Ancient Times to the Present Day by Glyn Davies. Another book I have access to right now but have never used. The peer reviewed reviews from Amazon seem to like it. Chapters 2 and 3 seem to be the significant ones for this
I should also mention that I have full access to JSTOR, which carries full text journal articles. After looking at its Terms and Conditions of Use policy, I can safely say that I am permitted to distribute the full text articles to a non-member for the purposes of collaboration, comment, or the scholarly exchange of ideas.
In just a brief search of their database, some articles which seem promising:
The Agricultural Base of the pre-Incan Andean Civilizations Arthur Morris
The Geographic Journal 165, (1999).
Believing the Ancients: Quantitative and Qualitative Dimensions of Slavery and the Slave Trade in Later Prehistoric Eurasia Timothy Taylor
World Archaeology 33 (2001)
Regional Survey, Demography, and the Rise of Complex Societies in the Ancient Aegean: Core-Periphery, Neo-Malthusian, and Other Interpretive Models John Bintliff
Journal of Field Archaeology 24 (1997)
Machines, Power, and the Ancient Economy Andrew Wilson
The Journal of Roman Studies 92, (2002)
Political Economy in Early Mesopotamian States Norman Yofee,
Annual Review of Anthropology 24 (1995)