Either i'm not understanding (highly likely) or you're not understanding my question.
For example level 1 is 100 dollars level 2 is 150 and thus the difference is 50 between the two levels, would I need to just put in the difference or the total for level two or is it dependent on the KS?
OK, I think I understand your question...
Ok, the levels are separate. You get the contents of one level. Nothing else.. If you want to get a higher level, you would need change your existing pledge to that matching level.
Looking at the kickstarter you sent as an example.
The following will print as many as needed.
- The $100 level would be 1 collected book. Your choice which one out of 6 different as far as I can tell. This is the standard version of that book.
- The $125 level would be the same book, but also with an exclusive slipcase for it.
- The $500 level is as far as I can make out all 6 different books in a special box.
- The $600 level is the same as the 500, but with the slipcases.
The following levels they will only print a certain amount of. So these will be more of an collectors item.
* the $550 level is the same as the 500 but you also get a signed extra print.
And so on...
And it seems that you can add on extra copies in the pledgemanager later (though some items that are limited might run out. If you really want those, you need to pledge for that level as is. and the level where you can be in the comic is sold out.)
So say you go for the @125 level, you can then in the pledge manager add on $100 to get an extra copy (without slipcase) of one volume. It is a bit unclear if you can go from the $100 and then add $25 to get the slipcase later. It should be doable, but you need to ask the ones running it for confirmation about it.
edit: As far as I can tell, the campaign has already concluded. That normally means if you haven't pledged for an amount, you can not do so afterwards. However, I would recommend checking with the ones running it if that would be possible. If not, and you have not pledged, then you are out of luck. You might get hold of some of the stuff at conventions o some stores, but no guarantees.