When you say internet auctions one website comes to mind.

eBay

With so many people visiting the site you would be a fool not to promote your products on there although the fees become high.

As a buyer you can find almost anything there.

There have also been a couple of other online auction sites but they are different to ebay. The penny auction sites are a popular choice as you can win expensive items for a fraction of the price. Although you do have to win.

Some penny auction sites are

Swoopo
Budson

You have to buy bid packs and then bid. It costs you money to bid and the price of an auction increases. For example on swoopo you pay 50p a bid and the auction price increases by 10p.

With these auction sites getting more and more popular they are getting difficult to win on.

Thrill Bid is a site that I have found is based in the UK although they ship worldwide. There are fewer items but in the facebook page you can reccommend products that you would like to see. There are very few members as it was only launched in March 2009.

This is a great way to win products and you can also resell them on ebay to make a good profit. If you register you also get 5 free bids.

Happy Bidding