You must select your brand attribute in Theme Settings -> Shop -> Brands
Price range: $3.00 through $15.00
Price range: $4.99 through $11.99
Price range: $5.99 through $25.99
Price range: $10.95 through $15.95
Price range: $5.99 through $22.99
Price range: $4.99 through $14.99
Price range: $7.99 through $19.99
Price range: $9.99 through $13.99
Price range: $7.99 through $24.99
Price range: $14.99 through $19.99
Price range: $3.99 through $32.99
Price range: $2.99 through $39.99
Price range: $9.99 through $20.99
Price range: $3.95 through $22.50
Price range: $7.99 through $19.99
Price range: $3.95 through $22.50