Gnome Necro Spell costs

[Ofaelol]

Hi, newish p99 player here - highest character is a 14 sham. I rolled a Gnome Necro on red and the level 8 spell costs shocked me. All of the spells cost 4pp and change and I could only afford the pet.

I don't think that my Sham payed that much for lvl 9 spells. Is this just how much caster spells cost, or should I go somewhere else besides Akanon to buy spells?