We do understand our customers' worries, but it is nearly impossible to predict freight cost without knowing the actual quantity. For right estimates for your goods it is important to provide relevant information including SKUs.
For example, 100 pcs in 3 styles and 2 sizes would be 600 pcs and have a much lower freight cost vs. 100 pcs in 30 styles and 5 sizes => 15,000 pcs in total quantity.