Multiple currency  displayed in ubercart product page
Take a look at Ubercart Currency Conversion. From the project page:


  This module converts prices of ubercart products from one currency to
  another currency. The target currency will be selected as follows  
  
  
  Administrators can select the currency and force all prices to be
  automatically converted
  If the above is not set, then the currency is determined based on
  user's address  
  If the above is not possible, then the site's default currency is
  used.
  
  
  The module depends on Currency module.