I think its too expensive raise a attribute. Its obvious that expending a single advance is too cheap to raise a attr too, so I tought about something like this:
The cost of raising a attr is equal to the new value - 2, BUT you have to buy a "fortune" die first, and when you raise the attr, you lose one fortune die. That way, thinking about 2nd edition, the white die is the 5% raise and a blue die is a 10%.
If you have 2 in a attribute, it will cost 2 advances (one for the fortune, other for the attr) to get it to 3
to 4, it will cost 3
to 5, it will cost 4
to 6, cost 5
ill try on my table saturday, but what do you guys think?