2011 Hyundai Sonata fuel door won't stay closed because the little knob to the right of the gas cap, which the door would usually latch onto, has broken off - do I need to replace the entire actuator?

What is your question?

Repair shop provided me with a repair estimate and quoted me $225 ($67 for labor and $155 for an aftermarket actuator). It seems a bit overboard when only the little connector inside the fuel filler area broke. And even the actuator cost seems super inflated - I saw an OEM actuator (Part #81590-3S000) at Hyundai Wholesale site for less than $50 and even Amazon has an aftermarket brand for $20!! Am I about to get really overcharged or is the entire actuator needed and the repair cost pretty typical in your opinion? Do they even sell the "little knob" that's at the end of the actuator? Thanks!!

What makes this problem better or worse?

Nothing helps, definitely won't close without a repair.

How long has your 2011 Hyundai Sonata had this problem?

About one week.