Are you saying it costs 2 SP to buy a level instead of 1 SP? If possible, I'd like a screenshot of where it says the SP cost for that level of that skill, and if there's any others like that I'd like to know what they are.
lol never mind. i just noticed that the calculator said it was 4/4 to max. but now it's 5/5. so that's where the other SP came from. sorry about that. lol