multi price in drupal commerce in drupal 7 I have a shop created with drupal commerece modules,I enabled 2 currency in my shop , but only show one of them, I want to show price in 2 currency     

something like this
price :  10$  / 20 IRR
I use multi currency module to achieve this job, but  I my problem is in payment  phase,
I use multi currency module to achieve this job,in multicurrency  module's setting I don't want  use  synchronize method, if you want have two field in my product , one form $ and another for IRR, I did this job by this method   

first enable IRR currency in
 admin/commerce/config/currency
 then in
 admin/commerce/config/currency/handling
under Enable dedicated price fields for Product check Iranian Rial
 by doing this  another field added you my product ( ** Price for IRR** ), this is good , after this I enable  *currency selector * block ,in checking out process by switching the currency I don't see any change in current currency of billing and cart. :(
why changing currency not changing cart currency?
Commerce Multicurrency module enhances some of the multi-currency capabilities of Drupal Commerce. You can show two or more currency for a product and check this video tutorial and this one


  Current features:
  
  
  UI for fine granular definition of exchange rates.
  (Every currency combination can be defined separately if needed)
  Synchronization of currency exchange rates directly from the European Central Bank (ECB).
  UI to specify which rates shall be synchronized and which are handled manually.
  Generation of currency specific price fields inclusive generation of rule-set to handle them.
  hooks for easy integration of custom currency exchange rate sources.
  




this tutorial will help you without sync http://mcaleaa.wordpress.com/2012/04/08/drupal-commerce-multicurrency-recipe/