we run a store for customized functional wear. Our demand is highly seasonal and our capacities are jammed in winter and underutilised in summer.
We are now looking for an app where customers can pick a deilvery date and the prices change according to free capacities in our produciton. We found apps to change shipping cost depending on the chosen delivery date, but we need to customise the name of the extra charge, e.g. seasonal surchare / discount.