It's to pay off any knights who might come wandering around.
'All right, then, I know what the king's promised you, but I'm SURE you'll take a discount in light of the quite-likely possibility that I would reduce you to a smoldering pile of cooked meat inside your half-melted armor if we DID battle... come on, my good fellow, let's settle down to haggling...'
This entry is mirrored at http://guardians-song.dreamwidth.org/208271.html. Comment wherever you like. Just remind me to get off the internet and do my homework.