[Rupert]

It's not unlikely that those transactions had values measured in money, though. While many forms of service and many benefits were paid in various goods and rights/obligations, many also had a money value attached. They generally weren't paid for in actual coin, but rather accounts were kept and every so often they were settled up (likely annually, after the harvest), sometimes with actual coin, sometimes with goods to the value of the net debt. This is also how fines tended to be managed.