We call it co-buying. Each co-buy lasts for only a few hours and we only ever have a limited number of each product to sell.

Once you join a co-buy your purchase is guaranteed but you'll have the opportunity to drive the price down by bringing other buyers.

We make it super easy to tell anyone who you think may be interested. Facebook is great for spreading the word, Twitter brilliant for soliciting timely action, and email perfect for targeting specific people.

And the better you are at bringing in other buyers the greater the rewards. Use the leaderboard to see how successful you are at bringing in other buyers. If you top the chart at the end of the co-buy, you could get your product for free.

As you can probably tell, we love securing exciting products at exciting prices for our co-buys. We also love hearing from you if you've spotted a product you think deserves a co-buy.

To make it easy we've designed a special bookmark for you. Drag our BuyaPowa button into your browser bar and then whenever you spot a product you like - but at a price you don't - just hit the button.

We'll ask you for the price you would like to pay, then it's over to us to do the rest. We'll group together requests and, as soon as we have enough demand, we will set up a co-buy. You'll be the first to know when it goes live...