: A 2006 "art intervention" where Banksy replaced store stock with his own doctored version. These can fetch up to $8,000 . Factors Determining Rarity & Value

: Offers an online valuation engine for a quick price estimate.

: Independent or self-produced runs (under 1,000 copies) often command high prices, such as the 1994 Sprawl demo, which sold for $1,000 .

: The rarest album ever made, with only one copy in existence. It sold for $4 million .

To find the exact value of a specific disc, you can use these tools:

: Collectors value these for superior audio mastering, exclusive booklets, and the presence of the obi strip (a paper spine wrap), with some editions like Prince's My Name Was Prince reaching $4,300 .

: The primary database for music collectors. You can search by the catalog number on the spine or the barcode to see historical sales data.

If you're identifying a CD, look for these key indicators that drive up price: