Amazon offers Prime members the Wagner Control Spray HVLP Sprayer, model no. 0417005, for $34.22 with free shipping. (Non-members can spend $49 to bag free shipping; otherwise, it adds $8.13.) That's the lowest total price we could find by $26. It features variable flow control, 4 psi, 40 cfm, and an adjustable spray tip.

Update: It's now available for Prime members only.