Audience with the king - too expensive tribute wise

So i have 6/8 ritual altar points. Two for increased omens, two for increased audiences, two for 'maps always contain 4 ritual altars'. I was thinking of allocating the 'Between Two Worlds' node next since it basically gives me 50% increased tribute earned.

I've encountered 3 audiences, keep deferring them but never have enough tribute to purchase them. Tribute cost is always 3K+ tribute.

Honestly its the worst feeling ever. One time I even deferred an audience to have it show up later with another audience under it, but having no tribute to purchase neighter one.