Dave is contracting with Jesus to buy a custom desk for his office. Dave's value of the custom desk is $1200.

At the time of contracting, Jesus doesn't know what the exact cost of building the desk will be, but expects it to have the following distribution:

Cost	Probability
300	25%
700	25%
1100	25%
1500	25%

Dave and Jesus sign a contract where Dave will pay Jesus $1000, paid in advance, and Jesus will deliver him the desk the following month. During that month, Jesus learns what the cost of the desk will be (and can then either breach the contract or perform as promised).

What is Dave's expected payoff when Perfect Expectation Damages are used?