While it might appear to the outside observer that Amazon and eBay are located in similar type of business in fact they are as about as far removed from one another are they might be.

On eBay sales of motor vehicles and properties are nearly the greatest of any company in the wholesale formula cost (enquiry) globe. Amazon and eBay are totally different from one another so it's very good to select both of the to swap through (please notice that I said trade not and though exchange with).
To trade via either of these companies is reasonable simple and there's no reason at all the reason why someone working from home must hesitate to select other manufacturers to work with too. Both businesses Amazon and eBay work with a wide variety of other businesses to make life easier for themselves with services like product suppliers, postage etc, statistics, dropshipping, there's no reason why you shouldn't either.