I normally buy 100 a week, have seen so many people winning lottery with less than 50 tickets as well. It is truly a game of chance and especially at free bitcoin its FREE. I typically just buy from my free btc rolls. All it takes for me is a few minutes of work to collect sats and buying ticket. That being said I have not been lucky yet. But hey does not cost a dime, and if you do win 0.3 btc  or more. which is a good payout!