Can you send me cheap app that can do that and i dont have to spend 8 dollars per moth just on that. Thanks very much

Problem is 1. I dont have the advanced plan 2. and slovak postal office dont support ccs 

We sell honey and other products with diffrent weight like 1kg jar or 40kg container or 290kg barrel. We send it trough diffrent slovak postal services wich arent carriers. Is it possible to calculate shipping rate accordingly to weight if we have fi...