Water damaged/DEAD iPhone 6 - ways to retrieve data?

I sadly dropped my iPhone 6 in a toilet 3 days ago and it seems it is dead for good. I can get the screen to come on (black apple on white) for a few seconds, but that's all. I have most of my photos and videos imported, but really need my Notes! I used them to journal the birth and first weeks of life of my first born, and they are not backed up. (Yes, I know, I know...my fault. Kicking myself.) I've seen DriveSavers as an option, but they quoted me $1,400-$1,900. Holy crap. Are there any other options that you know of or have had success with?

Thank you.