As of 2015, Amazon's range of sub-zero light bulbs are priced between $3.82 for a 40-watt appliance tubular light bulb to $7.90 for a 40-watt appliance tubular light bulb for specific serial products. Regular 40-watt appliance light bulbs are also sold at around $2.99 per light bulb.
Sub-Zero Wolf, a sub-zero product company, suggests buying regular 40-Watt appliance light bulbs from local or online retailers. Amazon.com and Bulbs.com, both popular online retailers, sell assorted appliance bulbs that range within general product use to specific product use. The pricing is anywhere from $2.99 per bulb (40-Watt, 120V A15 Clear Appliance Bulb at www.bulbs.com) to $7.90 per bulb (40-Watt, 120/130V tubular sub-zero bulb at www.amazon.com).