I ended up with 2 x 70 L
Robinox stockpots from AllQuip in Australia which work out being a great size. Can do two double batches at once if needs be.
Stainless ones are $300 AUD though. You can get aluminium ones far cheaper. 50 L ones are $85 AUD and 80 L are $110 AUD. Very good solid pots though. Postage is about $35 AUD from memory.
BeerBelly in South Australia and
Grain & Grape in Victoria also sell them by the look of things.
Edit: Just saw your list Ralp so the following is just stainless prices from Allquip but the brew shops above might have better prices and will of course have heaps of other stuff you can get without increasing postage costs.
Material: Stainless
Mini 20 L: $146 AUD + postage
Small 30 L:
Medium 50 L: $215 AUD + postage
Large 70 L: $300 AUD + postage
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