Two 25 litre Wine Buckets (Note: these are 2 complete wine buckets)
2-pack of plastic fermenters.
Fermenters have large volume so freight price gets high. If you need 2 buckets, choose this option since it has the same freight price as one bucket.
Having more than one fermenter is also practical. Useful when siphoning from one bucket to another to remove sediment from the fermentation. Or when aging, or if you simply want to ferment more than one brew at the time.