I think price per lens would have been fine, yes. That's ultimately what I care about. But I also think that cost-per-quantity-lens-pack, which you list but dep

I think price per lens would have been fine, yes. That's ultimately what I care about. But I also think that cost-per-quantity-lens-pack, which you list but deprioritized, is more understandable. Sorting by cost per lens but presenting the cost per pack (30, 90, etc.) is likely the sweet spot.