Upload plugin files to your plugins folder, or install using WordPress built-in Add New Plugin installer.
Add new Use existing Custom Field named 'karat, with values 24, 22, 18 or 14 to indicate the purity of the gold.
Update the gold price at WooCommerce -> Gold Price and all products with 'karat field will have their prices updated...
No, unless you are not going to update the gold prices after adding the product...
Yes, but the sale price will be removed when the gold price is updated...
This is because you have no gold products, e.g products with Custom Fields named karat and values 24, 22, 18 or 14.
Means that the product no longer is on sale, as the plugin can't calculate sale prices and just removed it..
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
Updated for WordPress 4.6.1 and WooCommerce 2.6.6, added message when product has non-calculated price.. 2.4.4 2015.08.18.
Updated for WordPress 4.3 and WooCommerce 2.4, small cosmetic changes.. 2.1.1.
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