Jesse,
Ever bought car repair parts from a dealer?
Mark up is 10-20x from OEM cost.
Example: Mass Air Flow sensor. Try to buy one for less than $300.
OEM cost $14 to $20!!! Parts, package cost to supplier is $4, complex manufacturing/engineering cost brings their total cost to $11, lucky to get 20% mark up when they sell to OEM. They are not allowed to sell that part to anybody else. OEM must protect dealers!
Free market places the burden of a good deal on the buyer.
When you bought the controller you must have though it was a good deal.
Not until it broke did you think otherwise.
Buyer beware!
In decent quantities your cost above are 3-4x high.
Large quantities 5x high.
Have fun,
Scott.