abatement
allowance
bank discount
breakage
cash discount
chain discount
charge-off
concession
cut
deduction
depreciation
discount
drawback
kickback
penalty
penalty clause
percentage
premium
price reduction
price-cut
rebate
rebatement
reduction
refund
rollback
salvage
setoff
tare
time discount
trade discount
tret
underselling
write-off
charge