Wolly aka Paolo Valenti

This plugin is an add on for Woocommerce.
In the product general setting section, you\’ll find a new checkbox named One time buy.
if you check it customers will be able to buy that product only once.
If they try to buy again, the product will not be added to the cart and an error message will be displayed: You\’ve already purchased this product! It can only be purchased once.
<h4>How can I contribute?</h4>
Drop by the <a href="https://github.com/wolly66/woo-wolly-one-time-buy" rel="nofollow ugc">Woo Wolly One Time Buy GitHub</a> repository and look through the open issues and pull requests.
To translate in your language <a href="https://translate.wordpress.org/projects/wp-plugins/woo-wolly-one-time-buy" rel="nofollow ugc">Woo Wolly One Time Buy</a>

Woo Wolly One Time Buy

Works great! Now I can deny to buy any subscriptions repeatedly.

Works great with WooCommerce Subscriptions

This is an add on for Woocommerce. With this plugin you can set a product to be buy only once.

Woo Wolly One Time Buy vs Variation Swatches for WooCommerce