We have found 2 problems on your plugin, which makes it , imposible to use at that moment
1) If we build a META combining a price matrix with , for instance, a select options with percentual price increment, the calculations
are not right. See next
Test 50 units and option 400 micras (25%) :
Right calculation should be 0.25€ (even rounded) and your plugin says 0.26€
Test 110 units and option 300 micras (10%) :
Right calculation should be 0.165€ = 0.17€ rounded and your plugin says 0.18€
Test 110 units and option 400 micras (25%) :
Right calculation should be 0.187€ = 0.19€ rounded and your plugin says 0.21€ !!!
You can do the test here: http://cajitastransparentes.com/producto/test-product-2/
2) Second problem, pricematrix does not work with % , only fixed prices per quantity step. In the configuration
it says you can fix the price either 0.3 or 3% but if we use % the plugin use it as a fix price.
It is very important to be able to make a pricematrix using %discounts instead of fixed prices , as if not, we will need
to build one META for every product, and if we have 5000 products, it makes imposible to manage.
You can see both configurations working here : http://cajitastransparentes.com/producto/producto-de-prueba/
Some can give me a solution, please ?