I maybe got close to 30k or a little over one day with minis alone, but that was without using any +pvp exp mods, I started minis around 7 or 8 am and played until close to 7pm that night, this is when I like 4%-5% away from pvp 10. I just got lucky and won most of the 30+ minis I did that day and had about 6 sags.
You don't get very much exp outside sag without the quest, so once you finish the pvp mini game quests it's not very good experience. And on Fury where the frequency of minis can change per time zone for a while, it would be harder to get chain minis like on Crom.
Playing those kinds of hours more than a few times a month is just not realistic for most. I will add that the skulls from the festival events and the daily world pvp events are a much better way to get pvp exp, especially if you save them for when you have over +100% pvp mods and just consume them all at once.
But the overall pvp exp per level past pvp 7 is trololol.