Welcome.
Ebay , IMO, is a P.I.T.A. My experience tells me that you would need large inventory and space to hold it for a long time. Patience is key. You need to factor in shipping too. From what I hear, Selling on Ebay is an art. Some people do well, some people don't.
As for selling to online companies : DON'T assume just because a company's name starts like, "Cash for ____" , that they are affiliated with cashforgold . Look through the buyers section and read the reviews. You will be presently surprised on how reputable the buyers are in this community forum.
Read the old threads. Learn about the product and methods you are interested in. Good luck in your adventure.
Bookmarks