Hi Beerpig, I can tell you that for my model, Tractor 11VE 28inch cut that the blade carrier is $135.Different to yours though. Mine is a square plate and yours has the scalloped sides which is similar to the latest models.
Got mine running today and cut a smidge of grass with it. Good to get the beast moving again. All up I replaced the four belt idler pulleys, drive belt tensioner pulley. Replaced all wiring, made a dodgy battery base and battery clamp, replaced the chain, replaced the engine, replaced as many of the imperial bolts as I could with metric and put on some new blades.
About the only thing I can fault is the pedal has a smidge too much travel. I have some new shims for the clutch which I'll fiddle with on the weekend.
I think the front tyres might be a smidge wider than the originals as they foul against the chassis on full lock even though it has steering stops.