I personally don't believe you can put a value on quality. However, if I could, I would say its worth a whole days work of stealing the contents from geo-caching in West Cornwall. Adam, Constantine.
Ask someone who likes fine art, some fine art reviewers said a £10 canvas print from IKEA was worth hundreds until they realised what they were reviewing was part of a prank.
Depending on who you know, its worth is between £1 and £10,000,000.
It's more a case of who has declared you to be Someone. Charles Saatchi will definitely drop by with a large bag of money to see Bear if, first of all, Nicholas Serota has described Bear as "pretty much the most exciting animal currently working in the avant garde" or similar.