think east gear cleared their stock cos alot of ppl went and bought in bulk.
perhaps u shd check with EG, if dun have, go CP lor.
EXTREME III is an overkill i think. cos i dun think any cam supports its speed yet as in, no cams can write that fast, dunno abt the pro bodies though. so by the time cams that can utilise these speeds come out, the price wld already have FALLEN!!!