Overture on the other hand, is a pay-per-click search engine, run like an auction. You can get a top ranking on Overture by simply out-bidding the next highest bidder. All it takes to outbid someone is a penny.
Overture listings appear as part of the search results for many different sites, including Yahoo!, MSN and AltaVista. If you want immediate traffic you can buy your way to a top listing in 3 to 5 days.
You need to do this cost-effectively, rather than getting involved in a bidding war. If you know how many people come to your web site before you get one sale, and what your profit margin is per sale you can calculate how much you can afford to pay per visitor, or per click. For example
1 sale = £5 profit
100 visitors = 5 sales
100 visitors = £25
You can afford 25p per visitor.
Don't forget this is a one off fee. If someone becomes a lifetime customer you can perhaps afford to pay more.