Hello Archana,

Nice  to see you on the forum and hear that you are happy with Polyboard .

Unfortunately it’s not possible to incorporate these additional charges directly into the price calculated by Polyboard.
Polyboard will calculate the price using only the materials and hardware costs.
To include the overheads you have to add the percentage to each material and hardware cost.
For instance add 5% machining + 2% electricity + Taxes + Profit margins  to all materials and hardware.
The fixed rates , transport, assembly, will have to be added after the Polyboard price.
Not sure what you mean by Wastage charges though.

I’ll send you a model for your storage unit later today.

All the best,
Ness