There are a number of real e-ticket sellers.
Listing here does not constitute an endorsement!
General - new ticket sales
TicketMaster One of the oldest ticketing sites "Find and buy tickets: concerts, sports, arts, theater, broadway shows, family events at Ticketmaster.com."
eTickets | Canada | Cheap Concert Tickets "Canada’s #1 place to buy cheap concert, sports, and event tickets online!"
General Ticket Resales
Ticket Selling Software Houses
http://ticketor.com - lets you set up your ticket sales on their site with your branding
Tickit - Online Ticket Sales System "Tickit makes it easy to sell tickets online, from little bar shows to multi-gate festivals…"