Too hard for me to work out as I only have a limited view of the stats. One way to get a guess would be to download the tickets file when it comes out and see all the accounts grouped together with almost the same number of tickets as they're likely to be botnets. My best guess is based on the fact there used to be 400 to 500 million tickets a week but now we're doing over a billion so I think 50% to 65% bots.

We restricted the RP redemption for 1000 lottery tickets per roll because that's what they were doing a while ago but they've switched to buying them instead. wetsuit said they're even depositing and buying tickets with the deposit to get around all the restrictions. Maybe if they have some bad luck and don't win anything that'll make think about not doing it next week.