Apple is one of the reputable brands but, definitely, it's product lines are not really perfect.
Definitely, there will be an instance when a device has a bug or a device will have a component problem (similar to your case) which Apple's warranty will not cover.
With every device comes cost. As to whether or not the amount is reasonable will, generally, be based on how a person understands the value of the device (or the software product) vis-a-vis the cost it would take to have it repaired or adjusted.
Should you feel that the cost and quality of a third party repair service will be proportional to your expectations, let alone, commensurate to how you value the Apple product you have, we will be glad to let you proceed as we know you're responsible enough to understand that with whatever cost-and-benefit approach you've considered, you're happy to accept the level of risk in "investing" [again] for such a repair service. Availing for an Apple repair service also has risks; arguably.
Regards,
RRB