Final answer:
The total value created from Owen selling his guitar to Shannon for $100 is $70, consisting of a $40 producer surplus for Owen and a $30 consumer surplus for Shannon.
Step-by-step explanation:
Owen is looking to sell his guitar for no less than $60. Shannon offered him $100 for it, even though she was willing to pay up to $130. Total value is created when both the buyer and seller derive a surplus from a transaction, also known as consumer surplus and producer surplus. In this case, Owen is willing to sell the guitar for at least $60, but he sells it for $100, creating a producer surplus of $40 ($100 - $60). Conversely, Shannon was willing to pay $130, but only has to pay $100, so she gains a consumer surplus of $30 ($130 - $100). The total value created from this trade is the sum of the surpluses: $40 (Owen's surplus) + $30 (Shannon's surplus) = $70 total value created.