Lowe's has the Project Source 3-Light 42-in Brushed nickel Dimmable LED Gimbal Linear Track Lighting Kit for $43.60
This may be a YMMV deal.
Integrated LED included, no bulbs to replace
450 lumens per head, 1350 lumens per fixture
5-year integrated LED warranty
Fully adjustable swivel heads provide optimal directional lighting
Dimmable with select household dimmers
Instructions are included for an easy installation