Dealing with third-party sellers is no fun. Newegg is probably the only major e-commerce website whose search feature can exclude third-party sellers.
So no idea what is happening but makes me think there are lots of sellers shipping from different locations potentially for competing sites.
You don’t have to deal with complaints, vetting products, or supply chain issues. Just side with the buyer in a dispute, and outsource all the other tasks to the customers who spend their time browsing through all the garbage on Amazon to save an extra few dollars.