2010 Prius V, Trouble Code C1214 - Hydraulic Control System Malfunction

Hello Group!

My son has a 2010 Prius V with approximately 173K miles.
We had all Rotors and Pads replaced in November of 2024.

Recently, I was checking Codes and ran across the Trouble Code C1214 (Hydraulic Control System Malfunction). There have been no noted symptoms such as Dash lights or Soft Brake Pedal. Brake Fluid reservoir is Full and no noted / apparent leaks.

I cleared the Code and for the past 2 days it has not returned. Car is scheduled to go into Mechanic later this coming week for review.

My Questions are:
1. Online Searches indicate potential Brake Actuator degradation / failure. Does this sometimes start with intermittent C1214 Codes?

2. I believe that I understand the ABS / Master Cylinder relationship, but to confirm, if the Actuator fully failed while driving, does braking performance / pedal effort increase?

3. Can a Prius be Sold "As is" without performing this repair if noted to the buyer? Value if Sold "As Is"?

Car's estimated value is now about $7K assuming the Actuator is not an issue.
How much would Brake Actuator Repair Cost? Is it cost effective at this age and mileage?

Thank you very much for your Inputs and Comments!