Given that your set came out in 2015, I have to assume it contains the same transfers found on the earlier domestic Blu-rays. JASON is in a different Harryhausen boxed set from Indicator, but sadly it's the same exact disc as the earlier release. The indicator editions of the Sinbad films are...
I need to pick up Gulliver at some point, since I'm a fanatic for both Ray Harryhausen and Bernard Herrmann. The ting is... it's one of my least favorite efforts from both of them. But I do need to get it. Maybe if TT reduces the price during one of their sales....