Ah, thanks for the explanation later on, i was looking at the first link and thought: 'Uhh.. it says it's a custom!' But i see it's about the 2nd auction. The first link makes it a bit confusing.
I'm glad it didn't go too high like Yuru said, but STILL. It's not really fair to not mention it's a custom... although reading the orig add, they also don't say it's a original pony, right?