With price varying by ZIP code, Home Depot offers the Werner 22-Foot Telescoping Ladder, model no. MT-22, for $159 with free shipping. That's the lowest total price we could find by $10, although it was $30 less on Black Friday. It features a 300-lb. weight limit and 28 configurations.
Note that this price is only available at select locations; other areas may charge up to $10 more.