The best tip is never answer any emails from ebay or paypal . The same messages would come to your messages folder that you can access directly from ebay.
And paypal sends messages directly through...
Welcome to salehoo:
Basically your saying your interested in finding items that over 20 million other entrepenuers are interested in selling. These are items from a severly oversaturated selling...
I dont know of any off the top of my head but what you would be looking for is liquidators that sell by the pallet or truckload. Sometimes those suppliers get several pallets of Car Audio products
Dropshipping is a very hard thing to do if your trying to start yourself out on ebay. My suggestion is to leave dropshipping alone unless you plan on selling that stuff on your own website.