Yeah outside of US/Canada, electronics are bloody expensive like in Australia/Europe/Middle East, ironically despite almost all electronics being made in Asia, nothings cheaper there and usually their specs are lower (went to China/Hong Kong/Vietnam over the summer). A lot of people end up resorting to 2nd hand sometimes or ordering from outside the country and voiding the warranty.
While defragmenting sometimes helps, reformating clears everything off. If your computer used to seem fast like when you got it, thats the speed you get.