selling $1 bills would likely be difficult using the bot in the article because the site (trademe.co.nz) is only in New Zealand where the smallest bill is the $

selling $1 bills would likely be difficult using the bot in the article because the site (trademe.co.nz) is only in New Zealand where the smallest bill is the $5 one. Although there are probably other equally effective sales you could run using $1 and $2 coins.