The biggest boom in buying and selling goods outside the mainstream retail arena has been led by eBay, the online trading site that boasts more than 3 million Australian members. Also popular is Trading Post, now operating as a busy website, www.tradingpost.com.au, selling a vast range of items, including many flats renovating products.

While many of the items bought and sold on eBay and Trading Post are second-hand, many others are new or factory seconds, sold by individuals or small online businesses.

Just a search for kitchen items comes up with 150,000 items. There's everything from the kitchen sink to a fridge, handles and cabinetry.

Most importantly, buying online offers the chance to save big dollars.

Research found that on average, across all categories, eBay was 25 per cent cheaper than recommended retail price.

Many of the new products sold online are sold through online stores offering reduced prices on items they import and sell wholesale. Many of these, like Renovation Boys, who sell bathroom, laundry and kitchenware, also have showrooms.

When you are buying online, research carefully to avoid making costly mistakes.

Read the item descriptions carefully and look closely at the images. If you want more pictures or more information, ask the seller for them.

Do you really should buy your home trough Ebay? mmm new times, new ways....