Swap, an online consignment and thrift store, raised $20 million this week from eEquity, a Swedish private equity firm, according to The Wall Street Journal. Sellers can list items like men's, women's, and children's clothes on Swap, and the startup charges $1.50 plus 30 percent of the transaction price. Swap has an online inventory of about 1.5 million items, and co-founder Juha Koponen told the Journal that the site has been poplar with people in rural areas who don't have access to malls and…