Sim, todos os feitiços custam ouro para aprender.
Copying a Spell into the Book
When you find a wizard spell of 1st level or higher, you can add it to your spellbook if it is of a level for which you have spell slots and if you can spare the time to decipher and copy it.
For each level of the spell, the process takes 2 hours and costs 50gp. The costs represents material components you expend as you experiment with the spell to master it, as well as the fine inks you need to record it. Once you have spent this time and money, you can prepare the spell just like your other spells.
Esse é um custo fixo - não importa se a mágica tem um componente de material, nenhum componente de material ou mesmo um componente de material caro. Todos os feitiços custam 50 gp x nível de magia para aprender.