Value of an IMac
How much is the resale value of an 2018 IMAC 21.5 in worth
How much is the resale value of an 2018 IMAC 21.5 in worth
To get an idea of what Apple would allow on a trade in go to this site and enter the serial no. of the iMac: Apple Trade In.
To get an idea of what Apple would allow on a trade in go to this site and enter the serial no. of the iMac: Apple Trade In.
EveryMac.com can give you a ball park estimated value of what it's worth.
https://everymac.com/systems/apple/imac/specs/imac-core-i5-2.3-21-inch-aluminum-mid-2017-specs.html
Try searching for similar models on eBay or Amazon to get an idea of value. As you will see, actual specifications like RAM, hard drive size, operating system etc matter.
Just to add, there were no 2018 iMacs. Just 2017s & 2019s.
Value of an IMac