Ok this will not be for everyone and as tenuous links go this one is pretty thin.
I started thinking of something that would confuse Fanpages and thought of this TV series that I loved as a child. So after looking it up on Amazon, I discovered it was £17. It's not the cheapest ever but it is cheaper than 6 months ago.
Also if you have Prime, you can watch it all for free :)
Basically Earth is under attack, the usual space defence forces are useless. So out comes the Secret X project to save the day. Suffice to say it pre-dates the likes of Power Rangers and their Zords. It was easily the coolest early 80s TV series.
Even if this goes colder than Uranus, I've found a link to my favourite TV Series. Now to challenge those memories and see if a memory from a 5 year old has stood the test of time.