My first PC was an eMachines system purchased back in 2000. I dumped it 3 years later and have been building my own ever since. I'm now on my 4th build. I spent around $1600 on it including OS, PSU, case, mouse, and keyboard. $1930 including my monitor, which was $330 at the the time. It probably would have easliy cost $2500+ if I bought it pre-built. I've never had a catastrophic hardware failure, so a system warranty doesn't justify the extra cost for me.