Mail Order
Online shopping has yet to fully catch on in Bangkok. Most stores have websites, but ordering from the sites is not available. Home delivery is much more common. Most large department stores offer free home delivery and installation of any large product.
Of course you still have the option of ordering with online stores such as Amazon and eBay (http://export.ebay.co.th), but be aware that it can take several weeks and even months for some items to arrive.