Word has it that the big slew of Batman tv show merchandise that all hit a few years back, after the rights being stuck in legal limbo for decades finally got cleared up, didn't sell nearly as well for anyone that everyone expected it to (outside of maybe the odd one here or there like Hot Wheels), hence why Batman 66 releases kind of fell off a cliff merchandise wise pretty swiftly after that initial boom.
So as much as I would have loved to see that Hot Toys Romero Joker get made one day, I just can't see it happening, unless Hot Toys decides to re-issue the Batman and Robin figures for the 60th anniversary in 2026, and finally make this guy as a companion piece. But given Hot Toys isn't exactly known for giving much of a damn about anniversary events or companion pieces anyway, it all seems incredibly unlikely, hence why I jumped on the custom run as soon as I heard about it.