what is the cost of 1GB RAM????/  

ram cost $84,5 kingstone ddrII/4200 , for the hd portable 80Gb seagate is about $75, and 160gb seagate sataII is $58..

RAM is becoming cheaper and cheaper and there are many sites of which you could get a great deal. Depending where you are in the world you should take a look at a few websites. Overclockers.co.uk is a UK site and they should be worth a look. Also, Computerplanet is a extremely good computer website and also Ebuyer. You could also use the above websites to search for your external hard drive or use one of the many price comparison websites on the internet.

1 GB Ram huh? well you haven't told us which type your system supports. There are SD ,DDR ,DDR2 dual channel rams in the market and the price depends on it. I'm taking that you need the dual chanel 667 mhz ram of igb.It costs around 85 dollars from kingston last i heard. And the hdd part, right now the best value is for 160 GB at 70$. It's from seagate and the name is the barracuda 7200.9. Excellent bang for your buck.

1 gb ram costs 3300.. i don know about portable hard disk rate.. in hdd seta company is best.. 80 gb costs 2000.. 160 gb costs 3800... all these rates in our arena..