It's like you already know electricians and people with skills in Nigeria. They'll change you x100 to fix something that doesn't even have a problem. When my AC started leaking, I opened it myself and decided to do the cleaning and it stopped leaking. A potential repair will charge like 20k
That is their way, I wanted a plumber to fix something for me, and after telling me his workmanship, I said I would get the material myself and he was like I supposed to know that is also another place that they gain some money, I was like wtf! you charged high for workmanship and still want scam me with the money for material, if one is not careful, those people will send one to village ...