Aveda Invati shampoo and scalp revitalizer are considered premium hair care products, with prices higher than average drugstore shampoos. However, fans of the brand find it's worth the investment for high-quality, natural ingredients and noticeable improvement in hair thickness and reduction in hair loss. The brand reputation and enjoyable scent also add value. While not cheap, Aveda Invati costs less than some clinical treatments and buyers see it as an affordable way to combat hair thinning.