For what it's worth, I believe the other seller/poster genuinely didn't have an idea of what the orange pups go for these days.
To my mind, 200m-250m is fair given they are weighted 1:23,300 and there is every possibility it will roll as a paragon thereby doubling that figure.
After six of the boogers (sold one for 250m, kept two, gave three away), I just figured it was someone elses' turn.
Besides, Vix's Six just had a nice ring to it!