Single Product, Multiple Variants...Help Plz!

I tried that app and it doesn’t work for me as I need to charge different prices for my items.

1 piece of fabric can be made into the following items for the following prices:

infant-hoodie- $30

infant-cardigan- $25

infant-pants- $20

toddler-hoodie- $35

toddler-cardigan- $30

toddler-pants- $25

and so on for 5 different sizes and 3 different styles for each.

this is how the built in variants are excellent but I only have 1 piece of fabric/1 product but multiple styles and sizes for varying prices.