Spilled water on macbook pro retina keyboard, what possibly happened and how much to get it fixed?

Ok, so the other night I spilled a little bit of water on my macbook pro retina 15 keyboard and speakers on right side. After this I quickly turned it off and turned it over to let it drain out for about 3 hours or so. After this I turned it on (stupidly) and the keyboard and trac pad were messing up as the trac pad was going crazy and the letters on the keyboard wouldn't work. So i figured there was still a little bit of water on the keyboard so i was about to turn it back over then it turned off. So i thought it may have run out of battery so i plugged it in and the light wouldn't come on. So I left it upside down for about 24 hours after that and then i plugged it in and the charging light came on but it wouldn't turn on. However, when i press the power key the orange light on the charger turns to green as if it was fully charged then when i let go of it it turn back to orange as it it went back to charging. So what i'm asking is what are the parts that likely got damaged and around how much will it probably cost to get it repaired as i have heard anywhere in the range of $300-$1500.