u/Hbos_350

I haven’t collected cards for 6 years and a couple months ago I looked through my collection, I knew I had this card but only just realised how expensive it is. Thought I was missing something, does it really go for around $1,500 ungraded and can reach up to $14,000 with a PSA gem mint 10? Why is it so expensive? Do I have a very expensive card sat in my binder that I didn’t know the real worth of?