That’s good, I suppose. Unicorn hairs are definitely hard to come by. I bet this stuff is expensive.
The below excerpt is from Pottermore:
About Unicorn hair:
Unicorn hair generally produces the most consistent magic and is least subject to fluctuations and blockages. They are generally the most difficult to turn to the Dark Arts. The most faithful of all wands are usually attached to their first owner, irrespective of whether they were an accomplished witch or wizard.
About Alder wood:
Although an unyielding wood, its ideal owner is helpful, considerate and likeable. When happily placed, an alder wand becomes a magnificent, loyal helpmate. Best suited to non-verbal spell work, whence comes its reputation for being suitable only for the most advanced witches and wizards.