how much is iPhone 8 Charge Port Repair cost?

how much is iPhone 8 Charge Port Repair cost? my phone needs me to properly place my phone charging cords in order to get the phone to pull a charge. I believe it is the i-phone itself charging port that may be damaged. Does anyone know roughly how much that costs to get replaced for an i-phone 8? I have already done a hard reset on the phone and cleaned the charging port as well. I also have updated the software for the phone to being the most current one as well and still not charging properly.

Can you please advise and give me a rough cost amount so i know before going into a store?