http://www.dancesport.uk.com/shoes/index.htm
Supadance Shoes, the brand many top competitor wear.
The two pictures I showed are Ballroom style (for dancing Waltz, Foxtro, Quick Step and Tango). The Latin dance shoes are different. Here is the site I found with the lowest price. Be sure to check size chart for size conversion between US size, British Size and EU size. The website has the chart somewhere. If they can't find the chart, let me know, I will find it.
http://www.dancesport.uk.com/shoes/index.htm
http://www.dancesport.uk.com/shoes/index.htm