I have asked a question about real benefits of the Heal skill over the Wand of Cure Light Wounds and Wand of Lesser Restoration, and, in short, it seemed like there is none. The skill takes a lot of time to apply, is not 100% reliable and not even really free (you have to expend uses of Healer's Kit).
The wealth by level chart, even if we assume the wealth level to be cut by half as per low fantasy game, suggests that our group, pooling it's wealth, is likely to be able to afford at least one of the wands before they even advance to level 2, and before that healing HP can be done by other (still more reliable) means like Channel Positive Energy, and diseases/poisons being not really very harmful.
However, one answer assumed a party of such a low wealth that they couldn't afford a wand at level 6, where expected wealth per character is 8000 GP in low fantasy game and 16 000 GP in a normal game.
I am not very familiar with the system or various source books written for it, so I would like to know:
Barring house rules, how could it happen in a real game that a level 6 group can't buy neither a Wand of Cure Light Wounds nor a Wand of Lesser Restoration?
Even though I would like the answers to mainly focus on "can't afford" meaining of "can't buy", it can also mean "can't find it for sale"/"can't craft" etc., and those answers are also welcome.