Ive seen this poster before at a different price. Why is there a price variation?
All products experience price variation from one source to another. The nature of antiques and other collectibles is such that this variation can be greater than with other products. Many factors affect the market price on art. When a cache of a particular image is discovered, the art pieces are distributed through the dealer and collector community. The price will reflect the dealers position on this distribution chain; the length of time the dealer has owned it; and the posters condition, rarity, artist and subject matter. No two posters are in the same condition. A poster can appreciate several times while in the possession of a dealer, without the dealers knowledge.
