I wondered if anyone had come across this. I;ve seen it in Woocommerce but want to use marketpress pro.
I know you had add options, eg tshirt, with s,m,l,xl however what if I want to offer a product that has add-ons, so:
a customer may want all 3 options or just one, I want it to calculate the cost of the various options without them having to go and buy them as a separate product?
This isnt what i'm selling but its easier than trying to describe what I sell....