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It's always good to verify :) You can use https://www.steemprofit.info and type in delegator name in the top right corner to check the APR.
@ellis.marell - 13% average for the last 30 days.
@anonsteve - 18% for the last 53 days which is pretty much max for voting bot, as far as I can tell.

Snapshots from the last two days during which I had 500 SP delegated:

Yesterday earned 0.255 Steem. Over 365 days, that works out to 18.6% ROI.

The day before, 0.302 Steem that works out to 22.05% ROI. Also got 0.004 SBD that day.

Edited to add: And today’s payout of 0.297 works out to 21.67% ROI.