SG Marketplace is an SG-owned
ebay or Delcampe or bidStart. It is not SG who is selling penny stamps. SG Marketplace has hundreds of sellers who have their own stores with the same names they had on bidStart and with the same material, as far as I can see. SG Marketplace is bidStart, renamed merged with Stanley Gibbons own online store. In the SG store at SG Marketplace you'll find lots priced at $600,000.00. Those who were dismissive of bidStart before will be dismissive of SG Marketplace. Those who had contempt for Stanley Gibbons before, will have plenty to turn up noses at now.
What's not to like? Plenty of opportunities to feel superior. Life is wunnerful, ain't it?