First time post here but Samsung has the Galaxy Note 9 with $300 off with AT&T or Verizon or Sprint. You get additional $30 off for Unidays, and if you trade in like I did a Note 8 you get an additional $300.
On Verizon it let me make an extra down payment max of $319.99 making my montly installment payment of $2.32 a month. According the to terms of the monthly installment contact, I can pay off the remaining phone balance anytime.
Since I missed the double trade in offer in early November, this was a pretty good deal albeit the issues folks have had with Samsung Trade in the past.
Here's the link, I can post receipt / invoice if necessary.