how to add extra fee to minimum cart total in magento

Question

I need to charge some extra fee if order subtotal lessthan or equal to 100$ in my magento site. i found a solutions to changing core files. but is there any chance to write code in local folder without touching the core files.

Thanks, murali.

Answer 1

I'd suggest going with another solution, the task to create this module is pretty big. The module touches a lot of area's that deal with price, exporting orders to account packages, credit memo's, shipments, invoices, transactional emails etc.

The way I'd implement this is to add an extra fee to the shipping costs. If that isn't an option, go with a stock module, something like: http://www.magentocommerce.com/magento-connect/low-order-fee.html (I haven't tested the module, just googled).

Answer 2

You can check my free and open source extension. This extension based on Shopping Cart Price Rule functionality. You can specify extra fee and it will apply if condition will match.

• Doesn't modify core files. Implemented in local scope.
• This Module add new total collector. It handles extra fee for totals.
• Doesn't break discount functionality.
• Module follows Magento Coding Standards

GitHub: https://github.com/yvoronoy/magento-extension-extra-fee

Answer 3

I just this past week created an additional fee line item and added it to the totals sections of various pages. I used the module available for download on the following link, it worked out perfectly =]

http://www.excellencemagentoblog.com/magento-add-fee-discount-order-total

Answer 4

Well, we made a different approach and created a simple extension, that is based on discount in shopping cart rules. It just removes restriction for negative discount values. It doesn't change core files, but makes a few core class rewrites.

Extra Charge for Cart Rules

Answer 5

I have just implemented a custom pricing scheme like you want, I have changed no core file only template files has been changed. From admin I have used matrixrates and added all the prices schemes in the CSV and upload the CSV. Now I can see all the methods on the cart and onepage. Then I modified the template files to display some methods for above 350$ and some for bellow $350. It does not need any other changes because the user will select one and it will be applied to the order. the code I have used is.

First I have to find the subtotal.

if(Mage::getSingleton('checkout/cart')->getQuote()->getSubtotal() > 350){

    $above = true;
}

Then in the loop displaying the methods I have created some filters like.

<?php foreach ($_rates as $_rate): 
   if($above && strpos($shippingCode, 'matrixrate') === false):
       continue;
   ................
  ?>

Also in your case if any of the core file is involed then you can make the same directory in code/local/ and copy the file and change it. It will be overwritten.

Answer 6

If taxes are not option for you then you should:

• create a extension base
• add attributes to order, quote , invoice , creditmemo quote_address entities to store the base and converted value of your total
• implements at least one totals class that extends Mage_Sales_Model_Quote_Address_Total_Abstract (you might want to add and extend for creditmemo, invoice etc)
• implements at least collect and fetch methods (See from abstract you can add your conditions here against total amount etc) from Mage_Sales_Model_Quote_Address_Total_Abstract
• adds a sort order for totals object sales/total_sort config node