My assistant panne went on vacation today, so I'll try to write this post myself, even though I'm not good at writing forum posts.
The buffbot should be up from about 4:30 am CET until 3:55 am CET every day now. It only goes down for rollover, but since I'm not sure how long it lasts for, I made it sleep for half an hour and then try logging back on every five minutes for an hour. (We'll see tomorrow how successful it was.)
I was wrong about the level 8 skill, since it's a self-buff, which means mental seems to have all buffs available for her class. The current prices are calculated based on a cost of 12 chips per pp at the enlightenment center, and that makes this pricelist for buffs:
360 chips - 300 minutes of Air Shield
720 chips - 600 minutes of Air Shield
840 chips - 300 minutes of Fire Shield
1680 chips - 600 minutes of Fire Shield
Contact me or make a post in this thread if you're experiencing any problems with the bot.