Dear Butt Sahab, Please note Once the A company starts getting frequent orders and becomes famous then they are bond to fix the prices for all clients throughout all provinces just like if you are buying Honda 70 motorcyle the price will remain same for all cities.
But Once A company starts production and supply to Market they offer huge profit ratio to Shop keepers so that they can sell more and more to get the benefit therefore it becomes lucrative for shop keppers to sell non famous brand.
You are advised to do not compromise on electric wire because the electric wiring is conclead and it will be pain in...... after sometime.
It is only an advise, Choice is yours.
Stay Blessed.