With more than 100,000 downloads, Webid is the first auction software of choice. It features easy installation, a full featured admin section with integrated payment gateways and ability to set payment or percentage rates per auction.
Admins can create auctions with galleries, set users as buyers or sellers, charge user fees and incorporates user feedback and auction Q&A.
Webid admins can create categories and sub categories, choose currencies, create separate about and terms and conditions pages, enable/disable message boards, and much, much more.
Webid is community supported and has been around for many years now. There are free and commercial templates available plus a host of add ons, all available from the webid site: http://www.webidsupport.com
Plug-ins allow you to show who your sellers are, integrate bitcoin payments, add a currency converter, restrict auctions to certain countries, and much more. There are many translations into other languages, and even responsive templates available.
If you want to create a proffessional auction site, then webid is the way to go!