[$0 after rebate] Samsung Galaxy S9 or S8 for T-Mobile for $0 after rebate

At T-Mobile, get a Samsung Galaxy S9 or S8 for T-Mobile for $0 after rebate, via the directions below. That's the best deal we could find by $629. To get this deal:

1. Buy the phone at full price in a Costco Warehouse
2. activate two qualifying lines of service (or add a new one to an existing account)
3. trade in an eligible device (eligible devices are listed on the product page)
4. go to this page and apply coupon code "COSTCOSAMSUNG" to receive your rebate

Alternatively, get up to $750 off a Samsung Galaxy S9+ or Samsung Galaxy Note9, via the same conditions as above

Note: you'll receive a bill credit based on the Fair Market Value of your trade-in, then the remainder offer value as a rebate card.