Not quite :-) I believe it is part of the equation. I don’t think it is the nature that work occurred applies value — rather the demand for something that someone has sacrificed something for exists — in art, generally a work that has sacrificed time to create something aesthetic has a demand that provides its value. It’s value is subjective to the buyer, however the astute buyer is more likely to buy the 1000 hour work over the mass produced out of nothing thing.