Step 1. Just navigate to the /app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php
Step 2. Open the file in your favorite editor and search for the getPriceRange() function and replace the code from the below code.
public function getPriceRange() { $range = $this->getData('price_range'); if (is_null($range)) { $maxPrice = $this->getMaxPriceInt(); $minPrice = $this->getMinPriceInt(); $index = 1; do { $range = pow(10, (strlen(floor($maxPrice))-$index)); $items = $this->getRangeItemCounts($range); $index++; } while($range>self::MIN_RANGE_POWER && count($items)<5); if((($range*5)>self::MIN_RANGE_POWER)&& (count($this->getRangeItemCounts($range*5))>5)) $range = $range*5; if((($range*2)>self::MIN_RANGE_POWER)&& (count($this->getRangeItemCounts($range*2))>5)) $range = $range*2; $this->setData('price_range', $range); } return $range; }
Note : Please do not edit the core Magento code file you can put this file into the /app/code/local/Mage/Catalog/Model/Layer/Filter/Price.php and put the Magento core code file as it is.
Hope it helps, Thanks and enjoy the reading.