Uni Custom Product Options & Calculations is a fully featured plugin that gives a possibility to add any custom options for your WooCommerce products as well as enables custom price calculation based on any maths formula. Moreover, there is a conditional logic for formula - it is possible to create several formulas which will be applied under certain circumstances - user chosen options.
TO MAC USERS: If RAR password doesn't work, use this archive program:
RAR Expander 0.8.5 Beta 4 and extract password protected files without error.
TO WIN USERS: If RAR password doesn't work, use this archive program:
Latest Winrar and extract password protected files without error.