The thing is, while these sorts of items may be common among adventurers, adventurers aren’t common in the world. Personal backstory not withstanding, adventurers are individuals that have risen above the common rank for one reason or another. I’d say having an arcane focus would qualify for that. I vaguely recall one handbook or another even saying somewhere that a commoner’s stats usually sit around 8 or something, so even a level 1 adventurer is a cut above.
The thing is, while these sorts of items may be common among adventurers, adventurers aren’t common in the world. Personal backstory not withstanding, adventurers are individuals that have risen above the common rank for one reason or another. I’d say having an arcane focus would qualify for that. I vaguely recall one handbook or another even saying somewhere that a commoner’s stats usually sit around 8 or something, so even a level 1 adventurer is a cut above.