Wait another 3 months. If prices don’t go up, they will go down. Just ask some pc shop’s shopkeeper to sms or WhatsApp you if prices increase. If they do even a little bit then you should buy it. If they don’t increase then they will decrease
BTW, the GPU & computer parts prices don't seem to be affected by the import ban. And computer parts are not directly mentioned in the import ban list (that would make sense because these are not really "luxury items"). So it's possible that prices for these items will not be affected. If so, then your whole investment plan will not work out.