Niceeshop via Amazon offers Prime members the Professional Cosmetic Brush 22-Piece Set in Pink for $9.58 with free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $5.48.) That's the lowest total price we've seen and a current low by $4, excluding the mention below. It includes animal hair brushes and a roll-up carrying case.

A close price: DealDreaming via eBay offers it for $9.99 with free shipping.