GST rate

Sk Industrial (5 Points)

03 June 2017  
I want to know, I purchase goods at a vat 5.5,14 %, but after GST I will purchase goods for 18%,28% ,what will happen to my stock? will the price decrease or increase ? how will I make out the difference between VAT and GST ? will I benefit or my stock value will go down ? or it may increase ?
please help..so that I can be prepared!