There is a good chance you can restore power.
$400 does seem good.

Yes, easy to work on, easy and cheap to get parts.

Big fun.

Go back to your profile and add your city/state.
Helps to know where you are.

Any chance you could post a picture of the car ?

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250