100 Y Money: You may wind up fighting a battle or getting an [[item]].
1000 Y Money: You may wind up fighting a battle against marginally stronger Yo-kai or getting an item that is marginally better. Items may include: [[Choice Tuna]], [[VoltXtreme]], [[Bronze Tegata]]/Note (the thing you use to boost the boss in Blasters mode)
"10,000 Y Money: You may fight very strong Yo-kai or get [[Divine Charm]] (+18 [Def]], -8 [[Str]])
Yo-kai compositions that you may wind up fighting if you pay 10,000 Y Money:
*[[Dismeralda]], [[Heheheel]], [[Minochi]]
*[[Tublappa]], [[Papa Windbag]], [[Illoo]]