It's fixed. Could you have done it yourself? Possibly.
List price is $25. That's what you get charged.

Depends on labor cost: figure $100 and hour. min charge 1/2 hour labor.

$50 (LABOR) + $25(PART) =$75 you paid $60 so you got a deal.

Order part online ($15 + $7 Shipping) = $22
Your labor/time/research= few hours.

So you overpaid $3 on the part. What's your time worth?

You got a great deal. Be happy. Have a beer. Don't dwell on money that has been spent.

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92 300D 2.5L OM602 OBK #59