According to the formula on page 247 of Ultimate Wilderness, Magic Plants have a price of SL x CL x 2000 x yield per day x growing season multiplier (where growing season multiplier is the number of growing seasons the plant goes through, and the cost to actually create the plant is equal to half of the value from the formula).
If this formula is to believed, it seems as though a plant based off of a 0-level spell would be literally free to make. That doesn't sound terribly overpowered to me, but it does seem out of character for Paizo to make it work that way.
Does anyone know if this is actually how the Magic Plants are priced, or if there is some exception I'm just missing?
