As per my understanding:

You see your post/post payout in Hive as dollar value but actually you get Hive/HBD for your post. Every witness puts price feed(price of Hive) that give you Hive/HBD against the dollar value of post. Or in other words your vote value is dependent on Hive price feed that witness are feeding in their witness server.

If witness do not update the price(they took reference price from exchange) then you will find price anomaly between exchange price of Hive and Hive generated through post payout.

What ia the meaning of last price feed done 12 days ago or month age? It means ,witness did not updated the price of Hive since last 12 days. Ideally they are supposed to update it every 6 hours (IMO,not sure)

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