Related Clues:
- Almost vertical, as a slope
- Like either main face of El Capitan
- Opposite of cheap
- Challenging for climbers
- Like 'black diamond' slopes
- Like "black diamond" slopes
- High-grade?
- Like a tough hill to climb
- Wholesale's counterpart
- Exorbitant, as a price
- Hard to scale
- Expensive and hard to climb
- Selling of goods to consumers
- Pretty expensive
- Extremely high, price-wise