In addition to a printed catalog, Elderly sends lists of available vintage instruments to subscribers in the U.S. and several other countries by mail and e-mail. Elderly purchases some of its used instruments from customers and then offers them for sale, while others are offered on consignment. Although larger retailers dominate the Internet market share (Elderly grossed $12 million in 1999, larger retail outlets such as Guitar Center grossed $297 million[1]), Elderly attempts to serve vertical markets by offering specialized or rare items on its web site, such as left-handed guitars[24] and instrument-specific books.[25]