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Quantity table
When activated the plugin will automatically show a table with price and quantity next to the product.
Required
The dynamic pricing plugin has to be installed before this works.

Woocommerce Quantity Table

Extension for Dynamic Pricing plugin that shows a table with price and quantity.

Nick Verwymeren

WooCommerce uses number inputs for the cart quantities by default, as most browsers now support <code><input type="number" /></code>.
However, you may want to have JavaScript powered inputs if you want greater control over appearance. Simply install and activate this plugin to do so.
It optionally includes a <a href="https://github.com/jonstipe/number-polyfill" rel="nofollow ugc">Number Polyfill</a>, which is a polyfill for implementing the HTML5 <code><input type="number"></code> element in browsers that do not currently support it.
To include this, add the following code to your theme’s <code>functions.php</code> file:
<pre><code>add_action( 'wp_enqueue_scripts', 'wcqi_enqueue_polyfill' );
function wcqi_enqueue_polyfill() {
 wp_enqueue_script( 'wcqi-number-polyfill' );
}
</code></pre>

WooCommerce Quantity Increment

WooCommerce Quantity Increment adds JavaScript powered quantity buttons to your cart page.

Woocommerce Quantity Table vs WooCommerce Quantity Increment