excel - E-Commerce, how to calculate price on 3 dimensional matrix? -

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i have product wish have quote form for. form has:

1 - quantity 2 - size 3 - option 1 4 - option 2 etc..

the quantity , size determine cost of optional extras. e.g "paint" item optional need calculate based on quantity , size.

whats best way build pricing matrix support structure? can excel table quantity & size, don't know how represent number of option elements depend on these 2 dimensions.

any appreciated..

if takes twice paint paint 2 widgets one, just

$(total) = $(each) * quantity

for size, you'll need number scale cost. amount of paint needed proportional surface area paint, in case

$(total) = $(per sq ft) * total sq ft

but can roll first function second, right? treat 2 widgets 1 twice square footage.

so you'll need estimate of cost per sq ft of surface area paint. calculate total square footage of of widgets you're selling, , multiply cost per square foot paint, , have price of extra.


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