You're either a very capable investor or are accustomed to very well paying jobs to need only 8 months to buy 6 properties.
Or option C, you're something of an embellisher.
I aim for a purchase every one and half months! Properties I buy are similar to Nathan Birch style .... I'd say the average current value of each property in my portfolio sits at around $180k ~
That coupled with living at home plus $100k~ salaries make it a not very difficult task if you're willing to put in the effort in renos (something I enjoy)