Blu-ray release 1/15/13; also on MOD
Experiment in Terror, out of print from Sony for some time, is now available in two formats.
Twilight Time, the "boutique" label of often less-than-boutique titles from Fox and Columbia, will release it on Blu-ray only on January 15, 2013. The few extras include the isolated music track, trailers and TV ads. This is a limited edition of 3000 and costs $29.95. Like all TT discs, it's available only from Screen Archives Entertainment (screenarchives.com), so there is no cheaper price for it somewhere else. As of this date of posting -- 12/21/12 -- it's available for pre-order at SAE.
Meanwhile, Sony has re-released the film on their MOD label, now called Columbia Classics. This DVD retails for $19.95 but is available from most sites at a lower price, so shop around. No extras, just the film.