Quantity affects the price

Hello!

First, this plugin is nice, but i need option for Quantity affects the price.

Like this:
In my webshop, i select one T-Shirt, i select the color and the size.

With this plugin:
1. I select the printing mode (like screen printing, small emblem)
2. I select the location of the emblem (like front side of the shirt)
3. I select the numbers of the color (like +10$/color)
4. I upload the emblem (like a logo)

Its ok, i create this 4 steps.

but i need like this affects to price (price is just example here):

1 color, screen printing, small, 1-50 quantity, 120$
1 color, screen printing, small, 51-100 quantity, 90$
1 color, screen printing, small, 101-500 quantity, 60$
1 color, screen printing, small, 501-1000 quantity, 45$

2 color, screen printing, small, 1-50 quantity, 160$
2 color, screen printing, small, 51-100 quantity, 140$
2 color, screen printing, small, 101-500 quantity, 100$
2 color, screen printing, small, 501-1000 quantity, 80$
…

1 color, screen printing, large, 1-50 quantity, 140$
1 color, screen printing, large, 51-100 quantity, 110$
1 color, screen printing, large, 101-500 quantity, 80$
1 color, screen printing, large, 501-1000 quantity, 65$

2 color, screen printing, large, 1-50 quantity, 180$
2 color, screen printing, large, 51-100 quantity, 160$
2 color, screen printing, large, 101-500 quantity, 120$
2 color, screen printing, large, 501-1000 quantity, 100$
…

I thought I was making a separate field for the quantities but that did not multiply the price of the product.. i have so many variations, like tshirt1 S size white is 10$, tshirt1 S size black is 12$…