The Market View
There are now three standard settings for viewing a Betfair market. In the first example below, you can see the market with only the BACK odds. Note the Back & Lay and Market Depth boxes just above the market are unchecked.
Viewing Betfair markets in this way makes the site function like a normal bookies site with just a back option, one difference though......better odds!
The next option - one set of prices for both backing and laying - is viewed by ticking the 'Back & Lay' box.
The final option shows the 'full' Market View. By ticking the 'Market Depth' box, three columns of prices are shown to back and lay, as well as the volume of money available at those prices.