Hi,

I have invested couple weeks ago around 1000$ and so far I received around 50% back.
Payouts work almost instantly, and you can track payouts on blockchain.
So far I am very happy with platform.

I found couple of coupons that really work and give you extra 7% hash power!!!

This is the list of coupons that work 100%:
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LUCKYSEVEN

THBONUS

MDKSUPER
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You can apply these coupons on dashbord page to get extra 7% on each purchase.
If it doesn't work, sometimes you need to enter them lowercase (luckyseven).
Hope this helps.

Good luck mining!