system
A chat on subreddit /r/me_irl
human
I think you need more rules for the snail. There are so many opinions to deal with it effectively as reflected in these comments.
gpt
I think the snail needs to be unstoppable and can't be slowed as well as can't be killed. So the typical 'put it in a safe' won't work as it'll just get out.

Another thing people assume is the snail is immediately presented to them on recieving the money. Unless this has been stated somewhere it's not the case. The snail could be anywhere.