to rise
GO UP
to rescue financially, pay somebody else’s debts
BAIL OUT
to reduce as a discount from the original price
KNOCK OFF
to purchase another business
BUY OUT
to decrease in value
COME/GO DOWN
to return money that is owed
PAY BACK
to cost
SET (SOMEONE) BACK
to earn a considerable profit
RAKE IN
to cease to operate as a business because of too many debts
GO UNDER
to spend a lot of money on something
SPLASH OUT ON
to keep a quantity of money in order to accumulate a bigger amount
SAVE UP
to reduce, to make a reduction in spending
CUT BACK