Hey in the part 3 that introduces PAYG it jumps from $100 down $40-65 a month to $0.21 a day / $1.50 a week.

It seems your mixing up examples since they're off by an order of magnitude. Once I read that my trust in everything else started breaking down and I couldn't be bothered to read the rest with the same level of engagement.

I noticed the same, the number don’t make any sense.