DQVC is an online shopping network available through the Nintendo Wi-Fi Connection in Dragon Quest IX. To use it the player must advance the story sufficiently that the NPC Sellma appears in Quester's Rest in Stornway. The service not only carries items, but extra quests and treasure maps.
New items and quests are available every day at 8:00 AM GMT. If an earlier quest has not been downloaded, it will be downloaded as well.
The theme of the daily items is changed on a weekly basis (for example, during a "Seduction Sale" week, the shop will stock feminine-themed cosplay items such as the dangerous bustier, jaguarment, and maid outfit). Medical items, Alchemy ingredients, and birthday cakes can show up any time.
Some items may return in future stocks.
Also during certain "sale weeks" new characters will be available at the Quarter's Rest via the elevator, these people can give you clothes that they wear. If you match their vocation you will receive more of their clothes.
The Nintendo Wi-Fi Connection service was terminated on May 20, 2014, which means the DQVC is no longer accessible through online connectivity.