Hi, I think the measurements next to the container of the "Larvae 1/6th Scale Accessory" are wrong.
I have that exact container (same details, right switch up, left switch down) and it's only 13,5cm tall (5 something inches). It does not look too out of scale next to my USCM.
The facehugger inside is smaller than the Hot Toys one and is not of the "bendy" type.
It did not come with liquid inside but it can be easily opened, there is no glue.
I cannot post pictures but I can send you some if you want.
Hope this helps,
Cheers