Attributes Price Markup

[Ajeh]

That gets a bit more complicate ...

But you could try, to update the Attribute Prices ONLY in master_categories_id 67 to use:

UPDATE products_attributes as pa 
LEFT JOIN products as p ON  pa.products_id = p.products_id
LEFT JOIN products_options_values as pov ON pov.products_options_values_id = pa.options_values_id
SET pa.options_values_price = pa.options_values_price * 1.20
WHERE p.master_categories_id = 67;

NOTE: Backup your database before trying this ...