This isn't taking a calculated risk, it's just being careless and lazy with due diligence.
You should have looked at the backlink profile and known right away it was fake. Why would you trust automated tools over what you can see with your own eyes (the backlink profile)? And that was 20% of your yearly savings? Damn, dude, that's a large percentage of your cash to bet on something like that.
Well...actually, 20% of my life's earning because I have never been able to save any money before in my life.
The domain was auctioned at godaddy. A good domain doesnt stay for more than few minutes. There are hundreds of vultures out there

I only had few minutes to snatch that domain. I did use more than a few tools to check the pagerank in the few minutes I had, and they all showed valid pagerank. I typed in info" and then the domain to see if there was any redirect but there was not. That made me feel more confident because I had detected few fake pr like this in the past. I wasnt aware of the 301 redirection trick that enabled the PR to stay even when they are no longer redirected.
I saw that Backlink didn't exist which means a drop in the next PR upate. It could be pr8 or pr7 or little lower. Still worth $1100 but if I keep the content alive and update add more back-links, the PR would stay. Who knows...That's part of the RISK...I was willing to bear..
I believe that, When you are a goal driven person, you live every moment with the anticipation that any time life would change for the better. There will be some breakthough that will turn that impossible into possible and make things work for you. From the thread, it obvious that I am not a regular domainer. I have never bought anything from godaddy auction before. I accidently landed on this domain auction out of nowhere. Sometimes, your optimism for betterment pushes you and makes you believe that its possible. I am no nuts. I know PR9 domains are a rare find, next to impossible. But, I don't mind pushing my luck and beliving the impossible, despite the risk of losing my hard earning. As I said, some risks are non calculated. No offense to anyone, but Had the PR been real, the comments from most people would have been drastically different. "Risk pays off" etc etc. MAking me feel a better man

But, nevertheless, I took the risk and lost in this occcasion but I am ok with it. Actually. I wouldn't shy away from taking similar risk in the future
Also, It has nothing to do with laziness. I work for more than 20 hours a day 7 days a week.