Nobody is going to build and ship you a PC all the way to Pakistan. Do you want a user to build you one from here and you pay in bitcoin? Are there not places in Pakistan that do this? Shipping all the way there isn't going to be cheap.
if i exchange btc to PKR the exchange coast much fees i just exchange 125 dollars he gave me 90 dollars .. its about shipping fee .. i will pay in bitcoin if someone build a gaming system for me with used items .. appreciated . and yeah i will pay first .. but escorw