Instead of slow pricing methods, you can now use this plugin to update your store prices for all products at once by percentage...
Unzip the package, and upload woocommerce-bulk-percentage-pricing to the wp-content plugins directory.
Activate the plugin through 'Plugins WordPress.
Please improve this, because I would pay for version that did more than say 200 products at time.
Or maybe break it up into batches and just note in UI that it will take time for each batch.
I haven't looked at the code to see if this can be tweaked out, but seems to be the problem when trying to load.
In DB I think we have regualr prices and prices of each variation.
So that regular prices were increased by 20% and prices with some selected items were increased by still 20%.
Cause if we increase all prices by 20%, including variations, we will have.
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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