At prices ranging from $50-$200 per square foot, stained glass can be an affordable design choice. Custom-made stained glass can be had for $100 to $300 per square foot, but some may claim rates of $500 to $1,000 per square foot, depending on variables such as complexity and geographical location. Commissioned pieces are pricier still. Whether as a one-off purchase or a sizable design statement, there are two factors to consider when investing in stained glass wall art.