This is a big thing on Odin (and on other servers from what I've seen)... assuming you bought those mistakenly thinking they were 100s.
People will even post them in beween M. Silvers and Jadshells. :/ Watch what you buy!
lol, I actually did see this guy a few times and paused and rethought about his currency, because he actually had it next to like normal priced jades/montionts so its pretty deceiving.
Even if he did respond it's obvious he did that on purpose and will be one of the people saying "Lol be more careful what you buys" or "Your own fault" something like that.
All true but deceit is a horrible way to make gil and I'm sure it will come back to him at some point.