It was a Walmart exclusive here in Canada but when they clearanced everything and didn't include the line in their planogram reset, I came to the conclusion they dropped it. I was able to get Mr Freeze and Newmar Catwoman from Rarewaves out of the UK on eBay for around $26 each, not much more than what Walmart was charging at $19.99 plus tax.
I bought the villains lair from here, which came out to $47.48 with shipping:
https://imusic.co/merchandise/078792...ins-lair-merch