Cryo-Z, the fist budget phase-change system by OCZ, that was reported to be available very soon a couple of times is on topic again at XtremeSystems. According to RyderOCZ, and this thread here started yesterday from the XS forums owner FUGGER, review samples of OCZ Cryo-Z are shipping now to reviewers. The unit will be available soon directly from OCZ for $299 a piece plus 35$ shipping cost. All units shipped to US customers ONLY (sorry about other non-US members including me), will be backed by a 1 year warranty. The reason given:

All units are 110V, none of them will work on 230V, and we won't be shipping out side North America, if you buy one and have it shipped to EU etc we can not warrant the unit as we have no control over shipping and the fact you are using a 230 to 110 converter.

A review written by FUGGER is about to be released any minute now, so please keep an eye on these XS threads here, here and here for more information. Also, it appears that Cryo-Z won't be a phase change unit for the mass market, since quantities are limited to "well over 100 units", and every unit needs to be hand tested before it's sold.