I have 68 scrolls on account from when they dipped to 1.4kk/ea in my server. I was going to unload them when it was back to 2-2.4kk but the tibia coins made me decide to keep em and see what happens. So by that logic:

68 scrolls = 17000 tibia coin.
68 scrolls paid = 95,200,000.
68 scrolls if sold(2.15kk we call) = 146,200,000.
17000 tibia coins(if 7-9k each) = 119,000,000 - 153,000,000.
17000 tibia coins(if 11-15k each) = 187,000,000 - 255,000,000.

Either way, profit is going to be made. My guessing is I will get about 9-11 for all of them. Not a bad 2 month investment