It's possible to have one's site with mods and so, like AndrewP have. Needs somebody independent to administrate totally independent Market. I like both options: managed by developer with mandatory obligations, deadline for updates, fixed prices and so, and by side - totally independent - to whom it may be more suitable.
Below is the legacy version of the Boonex site, maintained for Dolphin.Pro 7.x support.
The new Dolphin solution is powered by UNA Community Management System.