Which is why I suggested a counter in the MP, so you have an idea, but you are still able to exceed it if you wish.
In fact, there is nothing in the rules that prevents one-off large transfers over the hourly limit.
Quote:
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In any 24 hour period, regular one-sided transfers with another player may only equal one hour of resource production, including marketplace transactions.
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The key word being
regular. If it's a one-off then you haven't broken any rules.