Order Custom Field by Price

Question

First of all i've found numerous, topics, and, issues about ordering a WP_Query by its custom field value, but somehow all the proposed solutions don't seem to work for me.

I have a custom field Price from which i want to order my results. The problem is that when i use 21.00 as input, i also get the results where the Prices are 2095.00, 209.00, 208.00 etc. Also, when i use (for example) 658.00 as input, i get 65.00 as result

The values of Price are imported from an XML feed and come with the point as delimiter, so i add those to my input as well.

Here's my query

$args = array(
    'posts_per_page'    => 8,
    'paged'             => $paged, 
    'offset'            => 0,
    'post_type'         => 'travel',
    'land'              => $_GET['slug'],
    'post_status'       => 'publish',
    'suppress_filters'  => true, 
    'meta_key'          => 'price',
    'meta_type'         => 'NUMERIC', 
    'meta_value'        => $_GET['price'], 
    'meta_compare'      => '<',
    'orderby'           => 'meta_value', // I also tried meta_value_num
    'order'             => 'DESC'
);
$my_query = new WP_Query($args);

And i load the content with jQuery like so

var priceValue = $('<input>',{
    'type' : 'number', 
    'id' : 'maxPriceVal', 
}).on('change', function(){
    $('#results').load(queryPath+'&price='+$(this).val()+'.00');
}).insertAfter('#price');

Anybody any idea what's causing the problem here?

Thanks in advance!