Prices Paid For 2013 $1 Black Caviar And 2015 $1 Red Poppy - Anomalous Or Not?

Can someone help me understand why these coins seem to attract such high prices compared to other commemorative coins of similar mintage and ages? The 2013 $1 Black Caviar coloured coin with a mintage of around 15000 coins regularly sells for around the $100 mark. By comparison a 2013 $1 Polar Animals Penguin coloured coin with a smaller mintage (around 11000 coins) sells for around $20.

The 2015 $1 WWI War Heroes Red Poppy coin with a mintage of around 13000 coins regularly sells for around $900. The 2015 $1 Unlikely Heroes Murphy the Donkey coloured coin (mintage around 10000 coins) sells for around $30.

I can understand people paying higher prices for coins that are relatively rare or of lower mintage. These coins are the opposite.

The RAM has been pumping out some questionable themes in recent times just for the purpose of milking money out of poor collectors. Such coins are not popular and don't sell well and consequently end up attracting lower prices - e.g. the AFL coins now selling for less than the original recommend retail price. I'm not sure if the coins mentioned above fit that category but "polar animals" might?

One other thing I have noticed is that the Renniks catalogue lists high values for the Black Caviar and Red Poppy coins. Is it a case of the catalogue influencing the buyer to pay more rather than the catalogue reflecting the actual value of those coins? I would expect that Renniks would be a reliable source of information and that if an error had been made in the published values that it would have been corrected by now?

There is a similar thing happening with the 2006 50c Commonwealth Games Gymnastics coin. Despite it being a similar mintage to the others in the set, it regularly fetches prices around twice of what any of the others in the set do. Again, is it the inflated value in the catalogue that sucks people in?

Or are collectors just particularly enamoured with those coins?