What is the Best Place to Sell?? Ebay or Mecari  or somewhere  else! ?

IF you are designing & creating original jewelry, beadwork, etc, you could consider Etsy, check that out. But all things offered on Etsy are by original artists & artisans, craftspeople. NO resale of others' products. 

Ebay is well known, the first online sales site, and gets loads of traffic. There are lots of other sites now, but unless they get the traffic, the sales, they probably are not even worth cheaper commission rates. Ebay might have higher commission rates, but are your sales so much better that you net more actual earnings there?