+36%PSA 10 slabs, median move over six monthsDo PSA 10s really beat PSA 9s? The price data says barely
PSA 10s don't run away from lower grades: over six months the PSA 10 copies of the same cards rose about as much as the 9s, and PSA 8 slabs rose most. Here's the eBay sales data grade by grade, where the 10 believers are partly right, and what the numbers can't tell you.
