That was weird, according to his understanding, using the seal to teleport should cost at least two orbs not to mention that he took the book with him.
Could it be that moving within the nightmare realm had different rules than moving to the outside?
Aldrich had to figure it all out but he could always experiment some time later, for now he had to take the money and get back to the real world.
Aldrich had 63 red orbs and that was more than enough to take the seven coins he needed but he decided to take nine instead. It was not that he was greedy but he had to account for unexpected situations, rainy days.
Since he already had a good stock of essence orbs he might as well put them to use. Aldrich had to actively restrain himself from upgrading his attributes to prevent himself from accidentally igniting his first symbol.