I see that the formula is
Price = spell level × caster level × 2,000 × yield per day × growing season multiplier.
But I applied this to the Goodberry Bush and it comes out vastly different.
Goodberry 1st x Caster level 1 x 2,000, x 6 berries x year round 4 season = 48,000 gp. The Bush is only 8,000 though.
The Tree of Knowledge is Augury 2 x CL 3 x 2,000 x 2 apples x spring 1 = 24,000 maybe 12,000 since it is 1 apple of the 2 colors. But its price is 3,000.
Did they just not follow their rules? Am I missing something from their rules?