Rogue, altough its nice of you to put up an item here for people in invest in, i really wouldnt suggest ranging potions. Atm, they are being manipulated. It looks like the best time to buy them, BUT, if they get get dumped, you wont be able to sell them even at minimum. Thats because the people who bought them out bought aaaages ago, and now the price of range potions is nearly twice as much as what it was when they bough them, so even if they get dumped at minimum, the manipulator will still be making a hefty profit.
edit - Faculty - Nah, acidys and his friends are buying out bgs and tassets. 2 days ago he told me he was buying them out for min, and now look, you cant get for max.