If your mechanically inclined & willing to do a lil research on the matter i cant see why it should cost so much...Only problem you might have is finding dry ice people on youtube are using liquid nitrogin but you can still use dry ice and water would be cheaper, its not like your being real serious about this...over all if you can find dry ice somewhere on google the rest would be how creative you can be.. but do your research one thing you have to watch out is condinsation around were the liquid touches your block which is against your cpu....watch some videos on youtube to give you an idea..over all price i wouldnt have any idea..