Thumb Score: +45 Samsung: Trade-In Galaxy S10 Series, Get 128GB Note20 Ultra Smartphone (T-Mobile version) $278 + Free S&H & More for EDU account Samsung offers more instant rebate ($350 for Tmobile). With trade-in of s10 series ($550), education discount and $100 coupon code 100SAMSUNGN20U, you can get a nice phone for $269 + tax. If you trade in with S20 or use cash back sites, you may pay less. Trade-in value S20 series - $700 S10 series - $550 S9 series - $350 S8 series - $250 S7 series - $200 you can get extra 5% referrer discount too, If your account is new to samsung.com.