I need some type of freight shipping module. Maybe even a "flat rate clone" based on product category.

Example:

if product from cat_1 exists add:$50.00
if product from cat_2 exists add:$65.00
and so on. . .


This would work great if all products in cat 1 were pretty close in weight and all products in cat 2 were also all close in weight.

Any Ideas?
Thanks,
John