First of all, there are very few English online shopping sites in Shanghai or even China. So the best way to enjoy online shopping in Shanghai is to learn reading Chinese or have some one who knows Chinese beside you. Online shopping is becoming more and more popular in China, due to the fast growth of express delivery services in China: there are a lot of companies way cheaper than FEDEX.
All About Shanghai www.allaboutsh.com
Following is a list of online shopping sites in Shanghai:
1. Expatmart All About Shanghai www.allaboutsh.com
It is not a well known online shopping site in English. But it might be the only one in China. The site claims to support cash on delivery in most large cities of China. There are quite a few stuffs on the site.
All About Shanghai www.allaboutsh.com
2. Newegg - 新蛋网
The Chinese branch of the American online shopping site. Unfortunately they do not provide an English version in Shanghai. What they sell are mostly about computers and electronics. They accept cash on delivery. The delivery usually takes just half or one day. And the fee is usually quite low, around 10 RMB, unless you order something real heavy.
All About Shanghai www.allaboutsh.com
3. 360buy - 京东商城
360buy was first an online shopping site in Beijing(北京). Now they are in almost all the cities in China and claim themselves to be the largest online shopping site for computers, digital stuffs and electronics in China. What you can get on 360buy is similar to but more than Newegg. They accept cash on delivery, and the delivery is also fast and cheap.
All About Shanghai www.allaboutsh.com
4. Taobao - 淘宝
Taobao is just like EBAY, a c2c shopping site, which means most stuffs on the site are from other users of the site. You can find almost everything on Taobao, and probably at a tempting price. Since the deal happens between two individuals instead of buying from a shop, Taobao utilizes Alipay(支付宝) to secure the whole process. The payment is first made to Alipay. Then the seller should send out the goods. The buyer get the goods, check if they are good and then tell Alipay to finally make the payment to the seller and the whole process is done. If the buyer find something wrong with the goods, he/she may request to get the payment back instead of paying to the seller.
Alipay is a nice tool and it works quite well. But it also makes the whole process quite complicated while securing it. If you are not good enough at reading Chinese, it is not suggested to try Taobao. But if you are, it can be a lot of fun surfing in Taobao.

	Chinese	Pin Yin
Newegg	新蛋网	Xin Dan Wang
360buy	京东商城	Jing Dong Shang Cheng
Taobao	淘宝	Tao Bao
Alipay	支付宝	Zhi Fu Bao