eBay secretly over charged sellers


I sold my AVR on eBay for exactly $550 local pick up
ebay took $73.47 got $476.53 how that happened if they’re charging 12.55 % fees ? It was free to listed 
Customer service was able to explain to me exactly what is going on 
I buy and sell on eBay since 2010 and after PayPal got separated eBay becomes greedy and over charge sellers 
thanks goodness now we have more options 
128x128lordrootman
That's only one of the reasons I don't sell on ebay any longer... I've had good luck with Reverb, Audiogon and US Audio Mart. 
OP said: " Customer service was able to explain to me exactly what is going on"
- So what was the explanation?