TELL THEM TO DO IT. SERIOUSLY, TELL THEM.
When we make a site we have a policy of making sure that wherever a user is on the site, they will very quickly find a link to that final point of the sales equation. For most companies that's a 'contact us now' button, but for others it might be a 'BUY NOW'. Whatever it is for your company - call them to action!
SALES UPON SALES. KEEP THE RECOMMENDATIONS FLOWING
If you have one product that sells very well, but you think another goes well with it - make a recommendation on the first product page. Recommendations to similar products or information on each page can work really well. Try to tell a story through the links in your site.
CREATE A SCARCITY IN PRODUCT
If you are selling an actual product online, think about limiting the number available and showing that number of stock left on the sales page. If there are 'only 2 left', you appeal to the primal 'buy now' aspect of a shoppers mentality.
DON'T SHOUT IT IF YOU CAN SPEAK IT
In a busy commerce world, shoppers aren't going to fall for overly hyped jargon. When you are writing the content for your site, be compelling, but avoid completely over hyping it. Don't be an informercial on the internet!
THIS IS AMAZING - BUT WHY?
Really spell it out to consumers what is good about the product. Make it absolutely clear what the benefits of the product are. Don't sell a 'TV Screen', sell a "52 inch, Plasma, HD TV Screen" for example.
TEST THE HELL OUT OF HOW YOU TELL THEM TO DO IT
A good website and good sales platform takes alot of experimentation. Something as simple as the text on a buy button can change how well a product sells. Test variations - 'buy now', 'order now', 'purchase' - and see what has the best effect. Test and test again.
Sales Conversion Tips