Actually the timeframe on eligius matches the rented rigs perfect. Of course this is not an evidence for a scam but its still suspicious. I'd like to see 25-35 PH/s or even better some real hands on and reviews.
1 PH/s:
https://www.miningrigrentals.com/rigs/16811/
0.5 PH/s:
https://www.miningrigrentals.com/rigs/16071/There are more rigs rented in this timeframe.
Remember:
Buy it, when you see it.(reviewed by some BT-members like dogie and notlist3d)
And:
Trust needs to be earned. Completely agrees. Also if you see old enough forum reviews at the one tread (like few hundreds of messages including smart & polite seller replies) - and most of forum members showing photos like "Yes! This is me and my miner arrived" it is working too.