Miller Batman EX lasted about 14 minutes. Mr. Freeze EX was quick. But this will have a higher ES than those.
Just had a look at the archive. Mr Freeze was 350 ES so that makes sense but regular is still available after all this time and ES is only 700.
Miller Bats Ex was 800 ES so if it sold in 14 mins that's impressive! Regular still available 1500 ES.