once this stuff is gone, there will only be higher cost alternativesWhere did you hear this? There are many manufacturers selling PCOCC hook-up wire, and both Furutech and Neotech sell both bulk cables and hook-up wire made from OCC copper .
To your question, "is is worth it" there are many variables related to wires (stranded, solid, covering), and many variables related to cable making, but the PCOCC wire itself is thought to be a superior alternative to OFC. If you want specific answers, you might indicate what you are going to do with the "full roll" of wire; whether you have any experience with cable making; if the wire you are considering is stranded or solid core, and what gauge; if you plan to use the wire for IC's, speaker cables and/or power cords; whether you have considered bulk cable vs. hook-up wire, and if you plan to sell your cables for profit or simply use them for your own system?
Unless there is something going on in the wire market I haven't heard about, I wouldn't rush into a purchase because of a concern about a price increase. Partsconnexion and Sonic Craft both just wrapped up 20 percent off sales - and they will have more.