eBay secretly over charged sellers

@dill the item I sold was local pick up so shipping does not apply 
technically what they’re doing is add the tax amount to the final sale price so they can charge you more that’s scam 
so my case they’re charging me 12.55% base on $583 instead of $550 I sold it
what a scammers 

Have you looked in your seller hub for a deduction to cover that amount? I wonder if it is a surcharge since eBay is now handling the tax money. I live in a state with no sales tax so I get no tax info.

@donvito - like a lot of people, I post here and sell
on USAuduomart - you keeping tabs?

eBay, as mentioned by one of the other posters, is the biggest game in town with the most exposure for your item. That's what you pay for when you go there, otherwise start your own auction website and pay what you want. Buenos suerte.
In reality, if you're a seller on eBay, you know what a particularly tone deaf organization they are for their sellers. Most of the changes that have taken place over the last 20 years haven't been beneficial for sellers and as a result you saw a visible drop in quality sellers. Bottom line is they don't seem to care if you stay or go and they continue to hand their paying sellers off to offshore customer service reps who barely understand the language. Good luck with that, I've been selling elsewhere since the PayPal split.

There is still one good thing about eBay - their Global Shipping Program. I have yet to find a similar reasonably priced, convenient to both seller and buyer, service to get bulky items shipped from US to Europe. I have successfully purchased an AVR, subwoofer and floorstand-speakers. All other shipping options - USPS, DHL, UPS - were priced way too high.
Thanks to eBay GSP the transaction became at least half reasonable.