In the last year the odds of winning 200NT have gotten better. There used to only be 1-2 three number winners and 3 first prizes but there were 4 three number winners this month. This means that your chances of winning something have increased from 1 in 200 (or 1 in 250) to 1 in 143. Your chance of winning 1000NT is 1 out 3333 receipts. This was the first time that I have won 1000NT out of 3+ years of checking receipts.
To put some context into how often someone should win I counted my receipts this time. I had 54 receipts (about 1 per day) which means that I should win (200NT) once every 5-6 months. This seems consistent with my winnings. It feels like I go to the post office every 2-3 drawings to collect my 200NT.
Unrelated to this but I am trying to cut down on how many receipts I have by not buying junk food (coke + chips) from 7-11. I seem to have made negative progress since I already have 50+ receipts and there are still two weeks left.