Due to the change to flasks in 3.1, I am modifying my Alchemy policy slightly. To recap for the TLDR crowd, all flasks will now have a 1 hour duration (down from 2), but you'll get twice as many for each combine (the doubling includes Elixir Mastery procs). They now also stack to 20 (up from 5).
There are two other flask changes. Flask of Stoneblood now grants 1300 health (up from 650); and Flask of Endless Rage now takes 3x Goldclover instead of 3x Fire Leaf.
In 3.1, I will charge 10g each for flasks in lieu of materials. However, these will be handed out in stacks of 2 or 3 depending on anticipated raid length. (Note that this is a net reduction in the price.) I reserve the right to increase the price depending on demand; at the moment I'm fairly well supplied but this could change if we start hammering through Ulduar really quickly.
As always, donations of Lichbloom and Frost Lotus in particular are greatly appreciated and will get you one or more complimentary flasks if desired.
Lastly, please keep in mind that this service is for those who cannot farm the mats for themselves. You are expected to have flasks for progression raiding, regardless of whether you buy them on the AH, have the mats combined, or get them from a guild member, and getting them ahead of time is preferable to getting them 5 minutes before the raid starts.
Thanks for your understanding.