makenmarketing

This plugin allows you to designate certain products in your WooCommerce store to have no price. Instead, it displays a configurable button for customers to request a quote directly via a chat app (like WhatsApp).
From the settings page, you can customize: 
* The WhatsApp phone number. 
* The button text and icon. 
* The predefined message the customer will send. 
* The button colors.

Quote via Chat Button

Replaces the "Add to Cart" button with a chat button for products without a price, with customization options.

Martin Mechura

This is an extension for WooCommerce which will help you to sell products where can be important for the customer to know how much a weight unit costs. 
For example when selling food. Price is recalculated per weight and then shown according to your liking. The rules can be set store-wide or just for certain products. 
Main function of the plug-in is, that it takes the price of your product and divides this price by its weight, this is then displayed to your liking
<h3>Another Must-Have Plugin: Sell by Weight PRO</h3>
This plug-in allows you to sell easily products, where you want to have several weight option to sell at the same price for kilogram. 
It works in a similar way as Variable products, but it is easier to manage because you will enter the price only once and the options price is calculated automatically.
More info here – <a href="https://mechcomp.cz/sell-by-weight-pro/" rel="nofollow ugc">Sell by Weight PRO</a>
<h3>New plug-in available – Unit Based Stock PRO</h3>
Manage your stock in Weight units!
Handle inventory in weight units – a capability unprecedented in WooCommerce, which traditionally manages stock solely based on purchased quantity. 
Supports decimal values for stock inventory as well.
More info here – <a href="https://mechcomp.cz/unit-based-stock-pro/" rel="nofollow ugc">Unit Based Stock PRO</a>
<h3>PRO version available</h3>
<a href="https://mechcomp.cz/price-per-unit-pro/" rel="nofollow ugc">Price per Unit PRO</a>
PRO version features:
<ul>
<li>Single product settings – possibility to set the settings for each product individually and override the general settings</li>
<li>Better variations support – The variation shows price per unit after selecting.</li>
<li>It’s possible to enter custom number of units(for example kilograms) which is different from the weight – for the purpose you sell products with packing and you need to display recalculation for net weight and at the same time you need to keep gross weight for shipping purposes</li>
<li>This feature can now also be entered differently for separate variations on variable products</li>
<li>Change of recalculation per different unit (keeps the original weight, but shows the price per new unit)</li>
<li>Recalculation ratio – multiplies the price with this ratio – work for example if you want to show price per 100 grams (if you have shop in kg you enter 0.1)</li>
</ul>
Description
This is an extension for WooCommerce which will help you to sell products where can be important for the customer to know how much a weight unit costs. 
For example when selling food. Price is recalculated per weight and then shown according to your liking. The rules can be set store-wide or just for certain products. 
Main function of the plug-in is, that it takes the price of your product and divides this price by its weight, this is then displayed to your liking
<h3>Important notice</h3>
This plug-in works only if you have weight set on the product. This is independent setting used for shipping purposes.
You can find it here: 
Products->All products->some of your products->Shipping->Weight
For variable products with different weight of variations: 
Products->All products->some of your products->Variations->some variation->Weight
Recalculated price can be shown
<ul>
<li>Instead of original price</li>
<li>As a new row after original price</li>
</ul>
You can also add some text after recalculated price for example “/Kg” 
Price is recalculated only when the weight is set on the product.
There are also two different settings depending on viewed page
<ul>
<li>Settings for store page</li>
<li>Settings for single product page</li>
</ul>
This plug-in can do also some other customization to the appearance of the price
<ul>
<li>Additional custom text for all prices</li>
<li>You can hide original price when product is on sale</li>
<li>Additional custom text for variations</li>
<li>You can hide maximum price for variable products</li>
</ul>
Plug-in is compatible with WooCommerce versions from 3.0.0 to 4.0.x
There are two sets of settings
General settings – which will affect every product in the store 
 It is located under WooCommerce -> Settings -> Products -> Price Per Unit 
Single product settings – affects just single product, can also override general settings 
 It is located in product editor – tab Price Per Unit

Price Per Unit for WooCommerce

useful plugin 👏

Price Per Unit for WooCommerce allows the user to show prices recalculated per units(weight) and do some more customization to the look of the prices

Quote via Chat Button vs Price Per Unit for WooCommerce