actually, good mangas aren't dirt cheap, but shitty overrated shonens like bleach or Naruto runs for something like 5-6 €, whereas quality managas cost around 6-8 €, sometimes more for collector editions (for example, I bought a GITS 1.5 with the Bonus Dvd for 15 €, and the enhanced edition of I's cost something like 12€).
Oh, Im' french BTW