Caliper piston not retracting

[HydroponiK]

A few days ago driving on the highway, my car started violently shaking so I pulled over to inspect but could not find any issues. When I got home however I noticed a small amount of smoke was coming out of the front passenger-side wheel well. The rotor didn't look smooth and the wheel was super hot.

I set up an appt for the dealer to check it out today, but when I got there the rotor looked fine. They inspected and said the caliper piston was sticky and not retracting properly. They offered to replace the calipers for $750 which I declined b/c that seemed way too much for the work being performed.

Does anyone know what would cause the caliper piston to not retract properly? Are there any cheaper fixes? I don't plan to keep this car much longer so not looking to throw a lot of money, but need it fixed for safety.

[ASG14]

It;s called wear and tear.

[ThatVietGuy]

Cheapest would be to either rebuild it or replace it entirely. Either can be done yourself.

[HydroponiK]

Could the brake lines also cause the issue?

[TLMNICK]

Your brake lines are fine. It's just wear and tear. After a certain amount of time, and mileage, a caliper will seize. This will cause it to stick instead of retract.

I say get a rebuilt part and replace it yourself. It's easy.

[HydroponiK]

I'm not exactly mechanically inclined, especially with brakes. I could possibly bring it to a mechanic tho and have them replace it for me.

Is this the correct part I should be buying?

passenger side caliper