Goods sold at wholesale markets are always much cheaper than in big shopping malls. You can find plenty of wholesale markets with all kinds of commodities. You can bargain in these areas for the goods you desire at a surprisingly cheap price, but credit cards may not be accepted, and so you should come prepared with enough cash.
Machang Qianjia Commodity Wholesale Market 马场千佳综合批发市场The market was opened in 1999, covering an area about 6.6 acres. It is in good condition with fine supporting facilities.Location: No. 1, Xihuan Xilu, Fengtai District
Eastern Fairyland Wholesale Market 东方福地批发市场Location: No. 99, Dongzhimennei Dajie, Dongcheng District
Tian Wai Tian Wholesale Markets 天外天市场Location: B6, Nanlishi Lu, Xicheng District (south of the east entrance of Yutan Park)
Guanyuan Wholesale Market 官园商品批发市场Location: A4, Chegongzhuang Dajie, Xicheng District
Tianyi Wholesale Market 天意批发市场Location: No. 259, Fuchengmenwai Dajie, Xicheng District (north of Jinrun Building)
Source: travelchinaguide.com