Yes thanks. It looks like your product has potentially 4 x 3 x 2 x 4 x 13 = 1248 variations, but maybe some options aren’t available.
Some of the following may not be of interest but I’ll list them for completeness.
If one or more of your attributes does not affect price, you can choose “Any” when making the variations. So if say the finish type does not affect price, the number of variations reduces to 4 x 3 x 2 x 1 x 13 = 312.
Have a look at Smart Manager. The free version:
https://ww.wp.xz.cn/plugins/smart-manager-for-wp-e-commerce/
is limited for what you want, but you can try it out before going pro. It shows all your products and/or variations in a spreadsheet-like format for ease of editing prices and other parameters.
Then there’s this one to look at:
http://ihayag.com/jaf/woocommerce-too-many-variations-plugin/
It may be possible to export your variations into an Excel spreadsheet and edit them there, though that seems a bit cumbersome.
Booster (free version):
https://ww.wp.xz.cn/plugins/woocommerce-jetpack/
has a wholesale module, so you can set a min quantity / discount percentage point. The free version only allows for one point, you would need to go pro for multiple points. I see you have 13 quantity points and if you can remove those from the variations you get to a more manageable 96 variations. This method should allow you to sell other quantities in-between the 13. There are other wholesale plugins out there.
Product add-ons allow some variations to be replaced by radio buttons, each of which can have label and a price. Booster (free version) also has a product add-ons module, but the add-ons must be a fixed price. It will give you an introduction to add-ons.
I suspect you want to add a percentage, and this premium plugin can do that:
https://codecanyon.net/item/woocommerce-extra-product-options/7908619
I think this is a well placed plugin for your purpose.
Other similar add-on plugins include:
http://codecanyon.net/item/product-options-for-woocommerce-wp-plugin/7973927
http://www.woothemes.com/products/product-add-ons/
Add-ons cannot have their own SKU or control stock.
I can make no warranty that any premium plugin will be fit for your application. You will need to decide for yourself if purchasing.
