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Max value per post yesterday was $1.67. This fluctuates from as low as $1 to as high as $6 or $7, depending on how SP delegation market is behaving, as those prices have the biggest impact on our VP levels. That's ~7k units with daily posting frequency (without upvoting bonuses).

Max subscription level permitted a single account is currently ~12k. That's a very theoretical limit since our wide voting distribution means accounts hit the $$ limit per post much earlier than the max units now.