You must select your brand attribute in Theme Settings -> Shop -> Brands
Price range: $3.00 through $26.00
Price range: $6.99 through $11.50
Price range: $2.00 through $21.00
Price range: $6.99 through $19.99
Price range: $5.44 through $9.55
Price range: $3.99 through $9.99
Price range: $5.99 through $26.99
Price range: $4.99 through $14.99
Price range: $7.99 through $19.99
Price range: $9.99 through $22.99
Price range: $4.99 through $14.79
Price range: $9.99 through $19.99
Price range: $2.99 through $19.99
Price range: $2.99 through $9.99
Price range: $9.99 through $13.99
Price range: $9.99 through $15.00
Price range: $7.99 through $24.99
Price range: $6.99 through $12.69