Thank you my good man for posting this. I've been waiting to trade in my copy of Miles (ps4) for awhile. Once I saw that the ps5 version was only netting $18 I gave up, but lo and behold, the ps4 version did indeed trade for $25 base. Why, I don't know but I'll take it.
You're welcome, I'm glad I could help. I still haven't played Spider-Man yet so I can let Miles Morales go for now. I may just buy it digital, hopefully while it's sale.