Just to add: My buy buttons/math is also broken. The buy 1 and buy 10 often show basically the same amounts and many times when I buy 10 it doesn't even deduct the money. Also the buy max will say something like 81 and then two "buy 10s" later I can't afford anymore. I can't figure out a consistent reasoning behind the problem, it just seems chaotic and that the pricing/buying is extremely bugged (or at least the displayed pricing numbers are).
Tukkun, I bought the Mystery Tree via the Mystery Shop, and my browser crashed and had to re-open. The tree was replaced by the tree I had before, and my Mystery Points are gone.