Walmart offers the Smith 2-Gallon Max Contractor Sprayer for $24.14. (Amazon charges the same with free shipping, exclusively for Prime members.) Opt for in-store pickup to dodge the $5.99 shipping charge. That's $3 under our mention from two weeks ago and the lowest price we could find today by $2. It features five sprayer nozzles and a 21" wand.
Update: Amazon now offers it for $23.20 with free shipping for Prime members.
Update 2: Walmart has dropped the price of its offer to $23.20.