It says right on the spreadsheet that it's not meant to be used as a price list. Like no one would buy a piggy for 1276c. But, the data is really interesting!
Yeah, those spreadsheets don't reflect actual selling prices, only theoretical value. I haven't seen either a Rube or Rook go for under 250k in the past month or so. The other rares can be had for under 80k, though.
Since its an item thats priced after how much the collectors are willing to pay, you'll see them go for very different prices..Though I have mostly seen the Rooks go for between 200-300k the last month. If you offer 300k then you'll most likely find a seller pretty fast though.