Same here.
I had about 1.5 - 2.5 G Money, spend in "great Pachinko 10x" and left the items in Inventory for the next contest "selling Items".
1 time "great Pachinko 10x" costs about 42 million for me.
Now after selling all the stuff in my Inventory i have 221 million.
So i lost about 1-2 G money. (not sure how much it was exatly because of unsteadiness in how many epic gear i got)