Magento – Special Prices Showing Only on Product List Page

When you create a configurable product it doesn't matter what's the price of simple products -- these prices are ignored completely. So if you want to sell a simple product A which has price $29.99 and a simple product B ($39.99) then you must create a configurable product, set its price to $29.99 and open Associated product tab. Add products you want to associate with this configurable product. After adding them a block named Super product attributes configuration appears which contains options and price differences. Leave product A price empty and put 10 (+$10) to product B price field and voila: different simple product have different price.

There's actually an extension that allows you to use simple product prices instead of price differences, but it's kind of tricky to set up. Since it's free extension, I hope nobody complains about me pasting its link here:

https://github.com/organicinternet/magento-configurable-simple

OR

Try This if your problem solve

<?php 
  if($_product->getTypeId() == "configurable"):
  $conf = Mage::getModel('catalog/product_type_configurable')->setProduct($_product);
  $simple_collection = $conf->getUsedProductCollection()->addAttributeToSelect('*')->addFilterByRequiredOptions();
  foreach($simple_collection as $simple_product){
    echo $simple_product->getSku() . " - " . $simple_product->getName() . " - " . Mage::helper('core')->currency($simple_product->getPrice()) . "<br>";
}
endif;

Third-Party Modules

Disable third-party modules that could possibly be interacting with products. Go to the app/etc/modules/ folder and one-by-one set the active node to false within the xml module configuration file, clear cache after each one is disabled, and attempt to save again.

Modified Core

If this doesn't work, then you need to check to see if any of the core has been modified. Check the app/code/local/Mage folder to see if any files exist.

Do a diff of the app/code/core/ directory to an original untouched Magento installation that matches the version you are on.

Check Browser POST/Response data

Also, when clicking to update the product, check your AJAX POST/Response. I use firefox with firebug to do this, but I heard Chrome has an awesome extension that is easy to use. In firebug, I click the console tab and I can expand GET and POST requests along with the Response.