Commas instead of dots

Ok, i get it 😉

in case if someone need this:
shatner.js needed to replace value of hidden #minimum_price object with:
.replace(“.”, “,”);

Honestly, it was 7 months ago and i’m not sure if i remember exactly all i have done.
All i can do is to look into my code; maybe it could help you.

First at all – i’m not sure which version of WooCommerce you’re working on. Mine is older, 2.2.0 if i remember.

Anyway – i haven’t change anything on price.php:

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
global $product;

<?php if ( $price_html = $product->get_price_html() ) : ?>
	<span class="price"><?php echo $price_html; ?></span>
<?php endif; ?>

And i’m not sure why you use this:
$newminimum = ($newminimum - 0.01)
– and why you define $newminimum anyway?
Maybe that’s your problem? Do you use it somewhere else?

Here’s content of my shatner.js:

jQuery(function($){
  $('.cart').click(function(){

// Test to see if the price exceeds the minimum price (ie the Suggested Price):

	var minimum = $('#minimum_price').val();
	var myprice = $('input.name_price').val();
	myprice = myprice.replace(",", ".");

    if(parseFloat(minimum) > parseFloat(myprice))

    {
        alert('Please offer a price higher than the Minimum Price.');
        return false;
    } 

// See if the price input is zero (because we want people to be able to choose a free option: NEEDS LOGIC FOR SET MINIMUM

    else if(parseFloat($('input.name_price').val()) == 0)
    {
        return;
    }  

// Test to see if the input field has been left blank:

    else if($('.name_price').length && !parseFloat($('input.name_price').val()))
    {
        alert('Please enter a price in the Price field!');
        return false;
    }

// Test to see if input field is non-negative:

    else if(parseFloat($('input.name_price').val()) < 0)
    {
        alert("Look here, old chap, that's just not on. Please enter a positive number, or zero. Tsk tsk.");
        return false;
    }

  });
  $('.cart').submit(function(){

    $('<input name="price" />').val($('input.name_price').val()).attr('type','hidden').appendTo($('form.cart'));
    return;
  });
});

Good luck 😉