Estimates Inflated by Graded Cards / Estimates Deflated by Apathy?

When I scan some cards, I see high Ludex estimates. I get excited to sell and then hit the Shop button and find that everyday eBay sales are a fraction of the stated Ludex estimates, which are skewed up by PSA 10’s, etc.

Conversely, some cards with Ludex estimates in the cents have recent eBay sales in the dollars. These present a seller with a missed opportunity if they don’t check to see that a dud is really a dud.

Can you list different estimate categories like graded and non-graded?

Can you put more resources into reconciling recent eBay sales data into better estimates?

These discrepancies either over or under value one’s collection.