Answer:
as the person above said, it depends on the make, brand, type, where you buy, who you buy from, how much space it has, etc. Iphones 10-13 can range from $200-$600, depending where you buy it. Iphones 6-8 cost around $90-$200. Samsung galaxy s-s6 can range from $10-$150. Samsung galaxy s7 to s10 can range from $100-$500. "Right now, the average resale price for a used iPhone SE 2020 is $182.77. By comparing dozens of resale values online, you can stretch that trade-in value for the 64GB model is $210.24, with the higher storage models selling for $236.16 for 128GB and for 256GB."
more info on used Samsung prices, go to qz.com / 1550936 / heres-how-much-your-old-samsung-galaxy-phone-is-worth-now
more info on used Iphone prices, go to gadgetgone . com /iphone - values