[Optimus_Prime]

ebay prices are NOT retail prices. ebay prices are always lower than B&M sales, for multiple obvious reasons (exception: rare 90's inserts, especially basketball because the adain market is huge into hoops, and they are relatively new to the hobby)

That's obvious, But how can you not include them into the equation? How can you say it's market value if you don't include the entire market? Unless you consider ebay like 'the black market' I understand the Low and High value than to adjust for that.