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Well it was at around 70% just last week when I did one. :P
Atm it is under 60% though.

whats the return usually like?
Last week i sent 3 3 sbd to buildawhale and got $7 back but then the last couple times ive done like 5-6sbd and gotten like $8 so not quite as good

Every 33% = a return on the value, so 66% is double. My vlog I had about 6.2 used to get around 9.50 or something, that's at around 58% VP. You can look at their VP on steemd, they have their own site too to see the values you can upvote with, since sometimes you can't use certain values to even it out etc.