auction
barter
behind the scenes
business
buying
clandestine
clearance
close to ones chest
closeout
closet
commerce
concept
confidential
consuming
deal
demand
discreet
disposal
dumping
enterprise
exclusive
hushed
hushhush
independent
individual
inside
marketing
miscellaneous
negotiation
nonpublic
not open
off the record
offtake
own
particular
personal
private
privy
purchase
purchasing
rectangular
red
reduction
reserved
rubber
sale
secret
selling
separate
sign
special
stamp
symbol
trade
transaction
treachery
treason
under ones hat
unloading
unofficial
vending
vendition