i think you are posting in the right place. I think potion materials would be a good addition to the shop, although i would have them at a pretty high price because some members run potion shops and adding potion materials to the list of items you can buy from the shop would hurt those people, if the price for the materials was slightly higher than people are selling them for then you don't hurt the player economy and you still have access to them if the player shop goes out of stock. Then again I don't think this will be a big issue once the "auction house" is implemented in the trade district, you should be able to get all the materials you need at that point.

That is a good idea, but like unth1nkabl3 said, there are potion shops out there, you just have to find them. Plus the server doesn't want you to be able to buy everything from the shop, it wants you to work for them since this is a survival server. So my thought is that potion ingredients will not be added to the shop or at least for the time being.