The minimum fee to get all expansions at kickstarter was £80.
I joined at the mercenary edition stage and I have paid for Horizons, i didn't buy the second chance one off payment for all expansions for reasons. I will buy the next expansion if I'm still gaming by the time it comes out and at that point I will have paid out more than a lot of kickstarters (I'm not including all the other cosmetic stuff I brought because I'm sure lots of others have spent a bit on that too).
Anyway, will you still feel that you are owed more than the rest of us plebs when you are not contributing to the development costs?
I paid a total of £200 during the kickstarter (and lots more since.. t-shirts, ships skins etc) I personally don't feel I'm owed anything, but on the other hand being an ED kickstarter has taught me a n expensive lesson, ED will be the last kickstarter I ever put money into, mainly because (and this is just my opinion) I feel the game we have right now is nothing like the game we were promised during the ks of 2012. Quite frankly if I'd known then what the game would be like 4 yrs down the road, I would not have sold items (inc my mobile phone at the time) to raise the £200 to join the ks, I would have simply not bothered, but hey, that ship has long sailed.
TLDR: £200 paid, am I owed anything? nope. (apart from the right to shake my head and tut loudly should I ever pass Mr Braben in the street)