Weight the product to the store for a WordPress Woocommerce

The store sells meat. Desired weight calculator, or rather the user using the standard of "musical stuff" increase the number of goods, increase the weight of the goods to the desired size.

Options and convertible goods are not suitable because the weight can be 100 grams and 10 kg.

All sorts of options with plug-ins, which essentially boils down to the fact that in each item card you need to set the additional arguments is not very convenient, because a lot of goods, and updating them will be overwritten by the directory, which means these settings will be to fly.

The budget is not indicated as waiting for reasonable prices for this revision the price is negotiable just give me a sane numbers.