I have four sizes of items and they each have their own box size, and only one item fits in each box. There will always only be one item per box. If someone buys two of one size and one of another, that could mean two 54lb boxes and one 22lb box. Presently the USPS and UPS shipping modules would figure that as 130 pounds divided by the maximum package weight in the settings. There can be a decent cost difference between the two methods. If I use the per unit module, I could end up losing money on shipping depending on the person's location.

Is there a setting, module or other solution that would do this, so that a shipping estimate would count boxes separately, estimate each one, then add those up, and not by just adding weight? Guessing I'll need to modify the modules, but thought I'd ask before the time investment. Thanks all.