Looks like I have a dud brake booster - anyone have one for sale?
 
Thanks.

Where are you fighter?

I'm in Perth.

Yesterford will supply a Guaranteed Booster/MCyl, for $250 + Shipping, National Rail is probably the Cheapest.!!

It looks like the price is now $295 exchange, but it's great there's an option other than a questionable 40 year old unit. Thanks for the tip Ratbag.

Hitech Brakes in Wangara did my mk1 booster about this time last year , I think it was around the $200 mark.

Thanks Viskoe - I'll look into them.

If your desperate to have your brakes back working again, you can do this for free and about 30mins work under the bonnet. I did this ages ago and know it works!
1st locate the rod from the brake pedal which meets at a swing pivot point about half way to the vac booster. Undo the pins from the lower rod on the swing pivot(leads to the vac booster), next undo the middle pin(from the pedal) and simply swap them over so the brake pedal rod is now at the bottom and the booster rod is in the center..There is an adjustable thread at the pedal end(if I'm correct) and adjust to bring pedal to previous position . you have now halved the pedal effort for the given force. Remember to block off the vac line so air doesn't leak in thru the stuffed booster.
I done this' trick' when i fitted volvo calipers and a TF Cortina master cyl, tho i later removed the vac booster and put a plate there to hold the master up safely. Not an ideal solution but no more vac booster to worry about!
Cheers

do you just need the booster.?? or MCyl as well.??  got one i bought as a spare 
that was supposed to be tested by some mob in frankstonish area.!!
you organise freight at your end, i'll wrap in heaps of bubble wrap & drop off 
wherever, for $125

Thanks to all who offered assistance; took a punt on a second hand one in the end.